,TESTBANK for Precalculus 3rd Edition Cynthia
Y. Young
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, Chapter 0.1
1. Find the solution set of the equation.
–12x – 45 = 19 – 16x
A) {16}
B) {64}
C) {–28}
D) {60}
Ans: A Learning Objective: Solve linear equations in one variable.Solve linear
equations in one variable.Solve linear equations in one variable.
2. Find the solution set of the equation.
30c + 2 = 11 + 25c
A) {13/55}
B) {42}
C) {9/5}
D) {68}
Ans: C Learning Objective: Solve linear equations in one variable.
3. Find the solution set of the equation.
2(x – 1) – 4 = x – 4(x – 3)
A) {5/18}
B) {2/5}
C) {18/5}
D) {5/2}
Ans: C Learning Objective: Solve linear equations in one variable.
4. Solve for the indicated variable.
31 – [2 + 8x – 11(x + 1)] = 8(1x + 7) – [4(7x – 1) + 7 – 25x]
Ans: –
Learning Objective: Solve linear equations in one variable.
5. Find the solution set of the equation.
5n 8 15 2n
Ans: {1}
Learning Objective: Solve linear equations in one variable.
6. Find the solution set of the equation.
18c + 64 12 –17c
Ans: –
Learning Objective: Solve linear equations in one variable.
7. Find the solution set of the equation.
– x + 5(3 x + 2) 7( x – 22) –18 x
Ans: –
Learning Objective: Solve linear equations in one variable.
Page 1
, Chapter 0.1
8. Clear the fractions by first multiplying by the least common denominator, and then find
the solution set of the equation.
p 7p
5
5 6
A) {–5/6}
B) {1/10}
C) {10}
D) {–}
Ans: D Learning Objective: Solve linear equations in one variable.
9. Clear the fractions by first multiplying by the least common denominator, and then find
the solution set of the equation.
8p 2p
22
9 5
Ans: {–45}
Learning Objective: Solve linear equations in one variable.
10. Clear the fractions by first multiplying by the least common denominator, and then find
the solution set of the equation.
1 1
x x6
4 2
A) {–8}
B) 1
8
C) {8}
D) 1
–8
Ans: C Learning Objective: Solve linear equations in one variable.
11. When traveling in London, Cindy decided to check her e-mail at an internet café. There
was a flat charge of $4.5 plus a charge of 22 cents a minute. How many minutes was she
logged on if her bill was $11.54?
Ans: 32 minutes
Learning Objective: Solve application problems involving linear equations.
Page 2
, Chapter 0.1
12. The perimeter, P, of a rectangle is the distance around it, and can be found by solving
the formula P = 2l + 2w, where l is the length and w is the width. What is the length of
a rectangle whose perimeter is 30 inches and whose width is 4 inches?
A) 15 inches
B) 11 inches
C) 22 inches
D) 7.5 inches
Ans: B Learning Objective: Solve application problems involving linear
equations.
13. The perimeter, P, of a rectangle is the distance around it, and can be found by solving
the formula P = 2l + 2w, where l is the length and w is the width. What is the length of
a rectangle whose perimeter is 150 inches and whose width is 45 inches?
Ans: 30 inches
Learning Objective: Solve application problems involving linear equations.
14. The area, A, of a rectangle is the amount of two-dimensional space it takes up and can
be found by solving the formula A = lw, where l is the length and w is the width. What
is the length of a rectangle whose area is 45 square inches and whose width is 9 inches?
A) 36 inches
B) 27 inches
C) 9 inches
D) 5 inches
Ans: D Learning Objective: Solve application problems involving linear
equations.
15. Clear the fractions by first multiplying by the least common denominator, and then find
the solution set of the equation.
23 y 19 y 3
10 y + – –
14 8 7
Ans: –
Learning Objective: Solve linear equations in one variable.
16. Clear the fractions by first multiplying by the least common denominator, and then find
the solution set of the equation.
c – 2 c +9 c –1
– –13 +
8 6 7
Ans:
Learning Objective: Solve linear equations in one variable.
Page 3
, Chapter 0.1
17. A company has a total of $33,265 allocated for monthly costs. Fixed costs are $13,400
per month and variable costs are $29 per unit. How many units can be manufactured in a
month?
Ans: 685 units
Learning Objective: Solve application problems involving linear equations.
18. Jay and Morgan can deliver Coke products to local stores. Jay can do the job in 8 hours
alone. Morgan can do the same job in 13 hours alone. If they work together, how long
will it take?
Ans: hours
Learning Objective: Solve application problems involving linear equations.
19. For a certain experiment, a student requires 1190 ml of a solution that is 3% salt. The
storeroom has only solutions that are 2% salt and 19% salt. How many milliliters of
each available solution should be mixed to get 1190 ml of 3% salt.
Ans: 1120 ml of 2% salt and 70 ml of 19% salt
Learning Objective: Solve application problems involving linear equations.
20. Ashley has $3,300 to invest and decides to put in a CD that earns 5% per year and the
rest in a low-risk stock that earns 5.5%. How much did she invest in each to earn $175.5
interest in the first year?
Ans: $1,200 in the CD and $2,100 in the low-risk stock
Learning Objective: Solve application problems involving linear equations.
21. A Cessna 175 can average 172 mph. The plane makes a trip in 3.25 hours. The return
trip takes 2.5 hours. What is the speed of the wind? Round to the nearest tenth.
Ans: 22.4 mph
Learning Objective: Solve application problems involving linear equations.
22. A company has a total of $11,250 allocated for monthly costs. Fixed costs are $6,850 a
month and variable costs are $7 per unit. How many units can be manufactured a
month?
A) 1,607
B) 979
C) 629
D) 2,586
Ans: C Learning Objective: Solve application problems involving linear
equations.
Page 4
, Chapter 0.1
23. Lacie decides to start a small business making monogrammed towels. She can set
aside $3,220 for monthly costs. Fixed costs are $2,000 per month and variable costs
are $7 per set of towels. How many sets of towels can she afford to make per month?
A) 745
B) 460
C) 285
D) 174
Ans: D Learning Objective: Solve application problems involving linear
equations.
24. Jessica has $14500 to invest and decides to put some in a CD that earns 1.5% interest
per year and the rest in a low risk stock that earns 1.8%. How much did she invest to
earn $247.65 interest in the first year?
A) $7,504.55 at 1.5% and $6,995.45 at 1.8%
B) $10,050 at 1.5% and $4,450.00 at 1.8%
C) $4,450.00 at 1.5% and $10,050 at 1.8%
D) $6,995.45 at 1.5% and $7,504.55 at 1.8%
Ans: C Learning Objective: Solve application problems involving linear
equations.
25. A motorboat can maintain a constant speed of 11 miles per hour relative to the water.
The boat makes a trip upstream in 41 minutes and the return trip takes 22 minutes.
What is the speed of the current?
A) 0.3 mph
B) 11 mph
C) 3.3 mph
D) 22 mph
Ans: C Learning Objective: Solve application problems involving linear
equations.
26. Lee can mow a lawn in 30 minutes. It takes Ito 50 minutes to mow a lawn of the same
size. How long would it take them to mow the lawn if they work together?
A) 40.0 minutes
B) 20 minutes
C) 18.7 minutes
D) 80 minutes
Ans: C Learning Objective: Solve application problems involving linear
equations.
27. The length of a rectangle is 5 feet more than 5 times its width. The perimeter of the
rectangle is 202 feet. What is the length of the rectangle?
Ans: 85 feet
Learning Objective: Solve application problems involving linear equations.
Page 5
, Chapter 0.2
1. Solve by factoring.
x2 + 3x = 10
A) {–2,5}
B) {2,–5}
C) {–2,–5}
D) {2,5}
Ans: B Learning Objective: Solve quadratic equations by factoring.
2. Solve by factoring.
3x2 + 16 = 16x
A) {–4/3,4}
B) {4/3,4}
C) {3/4,4}
D) {–3/4,4}
Ans: B Learning Objective: Solve quadratic equations by factoring.
3. Solve by using the square root method.
x2 = 81
A) {–9,9}
B) {–9}
C) {9}
D) {81,–81}
Ans: A Learning Objective: Use the square root method to solve quadratic
equations.
4. Solve using the square root method.
(x – 5)2 = 4
A) 7
B) 7,3
C) 3
D) 10
Ans: B Learning Objective: Use the square root method to solve quadratic
equations.
5. Solve using the square root method.
(x + 15)2 = 10
A)
{15 + 10 , 15 – 10 }
B)
{–15 + 10 }
C)
{–15, 10 }
D)
{–15 + 10 , –15 – 10 }
Ans: D Learning Objective: Use the square root method to solve quadratic
equations.
Page 1
, Chapter 0.2
6. Solve using the square root method.
(x – 6)2 = –49
A) {6 + 7i, 6 – 7i}
B) {6 + 7i}
C) {13}
D) {13, –1}
Ans: A Learning Objective: Use the square root method to solve quadratic
equations.
7. Solve using the quadratic formula.
16 y 2 + 56 y – 91 0
A) –7 2 35
4
B)
7 2 35
4
C)
7 2 35 7 2 35
,
4 4
D)
–7 2 35 –7 2 35
,
4 4
Ans: D Learning Objective: Use the quadratic formula to solve quadratic
equations.
8. Solve by factoring.
5x2 – 405 = 0
Ans: {–9, 9}
Learning Objective: Solve quadratic equations by factoring.
9. Solve using the quadratic formula. Express your answer as a decimal to two decimal
places.
1.0x2 + 1.4x – 0.2 = 0
Ans: {0.13, –1.53}
Learning Objective: Use the quadratic formula to solve quadratic equations.
10. Solve using the square root method.
(x – 12)2 = 36
Ans: {6, 18}
Learning Objective: Use the square root method to solve quadratic equations.
Page 2
, Chapter 0.2
11. Solve using the quadratic formula.
16 y 2 + 48 y –111 0
A) 6 7 3 6 7 3
,
4
4
B) 6 7 3
4
C) –6 7 3 –6 7 3
,
4 4
D) –6 7 3
4
Ans: C Learning Objective: Use the quadratic formula to solve quadratic
equations.
12. The area of a rectangle is 135 square feet. The width is 6 feet less than the length. Find
the dimensions of the rectangle.
Ans: 15 ft by 9 ft
Learning Objective: Solve quadratic equations by factoring.
13. If a person drops a water balloon off the rooftop of a 121 foot building, the height of the
water balloon is given by the equation h = –16t2 + 121, where t is in seconds. When
will the water balloon hit the ground?
Ans: 2.75 seconds
Learning Objective: Use the square root method to solve quadratic equations.
14. Solve c2 – 64 = 0 for c.
A) {–8}
B) {8}
C) {–8 , 8}
D) no solution
Ans: C Learning Objective: Use the square root method to solve quadratic
equations.
15. Solve z2 = 4z for z.
A) {–2}
B) {0 , 4}
C) {–2 , 2}
D) {2}
Ans: B Learning Objective: Solve quadratic equations by factoring.
Page 3
Y. Young
Hello all ,
We have all what you need with best price
Our email :
Our website :
testbanks-store.com
, Chapter 0.1
1. Find the solution set of the equation.
–12x – 45 = 19 – 16x
A) {16}
B) {64}
C) {–28}
D) {60}
Ans: A Learning Objective: Solve linear equations in one variable.Solve linear
equations in one variable.Solve linear equations in one variable.
2. Find the solution set of the equation.
30c + 2 = 11 + 25c
A) {13/55}
B) {42}
C) {9/5}
D) {68}
Ans: C Learning Objective: Solve linear equations in one variable.
3. Find the solution set of the equation.
2(x – 1) – 4 = x – 4(x – 3)
A) {5/18}
B) {2/5}
C) {18/5}
D) {5/2}
Ans: C Learning Objective: Solve linear equations in one variable.
4. Solve for the indicated variable.
31 – [2 + 8x – 11(x + 1)] = 8(1x + 7) – [4(7x – 1) + 7 – 25x]
Ans: –
Learning Objective: Solve linear equations in one variable.
5. Find the solution set of the equation.
5n 8 15 2n
Ans: {1}
Learning Objective: Solve linear equations in one variable.
6. Find the solution set of the equation.
18c + 64 12 –17c
Ans: –
Learning Objective: Solve linear equations in one variable.
7. Find the solution set of the equation.
– x + 5(3 x + 2) 7( x – 22) –18 x
Ans: –
Learning Objective: Solve linear equations in one variable.
Page 1
, Chapter 0.1
8. Clear the fractions by first multiplying by the least common denominator, and then find
the solution set of the equation.
p 7p
5
5 6
A) {–5/6}
B) {1/10}
C) {10}
D) {–}
Ans: D Learning Objective: Solve linear equations in one variable.
9. Clear the fractions by first multiplying by the least common denominator, and then find
the solution set of the equation.
8p 2p
22
9 5
Ans: {–45}
Learning Objective: Solve linear equations in one variable.
10. Clear the fractions by first multiplying by the least common denominator, and then find
the solution set of the equation.
1 1
x x6
4 2
A) {–8}
B) 1
8
C) {8}
D) 1
–8
Ans: C Learning Objective: Solve linear equations in one variable.
11. When traveling in London, Cindy decided to check her e-mail at an internet café. There
was a flat charge of $4.5 plus a charge of 22 cents a minute. How many minutes was she
logged on if her bill was $11.54?
Ans: 32 minutes
Learning Objective: Solve application problems involving linear equations.
Page 2
, Chapter 0.1
12. The perimeter, P, of a rectangle is the distance around it, and can be found by solving
the formula P = 2l + 2w, where l is the length and w is the width. What is the length of
a rectangle whose perimeter is 30 inches and whose width is 4 inches?
A) 15 inches
B) 11 inches
C) 22 inches
D) 7.5 inches
Ans: B Learning Objective: Solve application problems involving linear
equations.
13. The perimeter, P, of a rectangle is the distance around it, and can be found by solving
the formula P = 2l + 2w, where l is the length and w is the width. What is the length of
a rectangle whose perimeter is 150 inches and whose width is 45 inches?
Ans: 30 inches
Learning Objective: Solve application problems involving linear equations.
14. The area, A, of a rectangle is the amount of two-dimensional space it takes up and can
be found by solving the formula A = lw, where l is the length and w is the width. What
is the length of a rectangle whose area is 45 square inches and whose width is 9 inches?
A) 36 inches
B) 27 inches
C) 9 inches
D) 5 inches
Ans: D Learning Objective: Solve application problems involving linear
equations.
15. Clear the fractions by first multiplying by the least common denominator, and then find
the solution set of the equation.
23 y 19 y 3
10 y + – –
14 8 7
Ans: –
Learning Objective: Solve linear equations in one variable.
16. Clear the fractions by first multiplying by the least common denominator, and then find
the solution set of the equation.
c – 2 c +9 c –1
– –13 +
8 6 7
Ans:
Learning Objective: Solve linear equations in one variable.
Page 3
, Chapter 0.1
17. A company has a total of $33,265 allocated for monthly costs. Fixed costs are $13,400
per month and variable costs are $29 per unit. How many units can be manufactured in a
month?
Ans: 685 units
Learning Objective: Solve application problems involving linear equations.
18. Jay and Morgan can deliver Coke products to local stores. Jay can do the job in 8 hours
alone. Morgan can do the same job in 13 hours alone. If they work together, how long
will it take?
Ans: hours
Learning Objective: Solve application problems involving linear equations.
19. For a certain experiment, a student requires 1190 ml of a solution that is 3% salt. The
storeroom has only solutions that are 2% salt and 19% salt. How many milliliters of
each available solution should be mixed to get 1190 ml of 3% salt.
Ans: 1120 ml of 2% salt and 70 ml of 19% salt
Learning Objective: Solve application problems involving linear equations.
20. Ashley has $3,300 to invest and decides to put in a CD that earns 5% per year and the
rest in a low-risk stock that earns 5.5%. How much did she invest in each to earn $175.5
interest in the first year?
Ans: $1,200 in the CD and $2,100 in the low-risk stock
Learning Objective: Solve application problems involving linear equations.
21. A Cessna 175 can average 172 mph. The plane makes a trip in 3.25 hours. The return
trip takes 2.5 hours. What is the speed of the wind? Round to the nearest tenth.
Ans: 22.4 mph
Learning Objective: Solve application problems involving linear equations.
22. A company has a total of $11,250 allocated for monthly costs. Fixed costs are $6,850 a
month and variable costs are $7 per unit. How many units can be manufactured a
month?
A) 1,607
B) 979
C) 629
D) 2,586
Ans: C Learning Objective: Solve application problems involving linear
equations.
Page 4
, Chapter 0.1
23. Lacie decides to start a small business making monogrammed towels. She can set
aside $3,220 for monthly costs. Fixed costs are $2,000 per month and variable costs
are $7 per set of towels. How many sets of towels can she afford to make per month?
A) 745
B) 460
C) 285
D) 174
Ans: D Learning Objective: Solve application problems involving linear
equations.
24. Jessica has $14500 to invest and decides to put some in a CD that earns 1.5% interest
per year and the rest in a low risk stock that earns 1.8%. How much did she invest to
earn $247.65 interest in the first year?
A) $7,504.55 at 1.5% and $6,995.45 at 1.8%
B) $10,050 at 1.5% and $4,450.00 at 1.8%
C) $4,450.00 at 1.5% and $10,050 at 1.8%
D) $6,995.45 at 1.5% and $7,504.55 at 1.8%
Ans: C Learning Objective: Solve application problems involving linear
equations.
25. A motorboat can maintain a constant speed of 11 miles per hour relative to the water.
The boat makes a trip upstream in 41 minutes and the return trip takes 22 minutes.
What is the speed of the current?
A) 0.3 mph
B) 11 mph
C) 3.3 mph
D) 22 mph
Ans: C Learning Objective: Solve application problems involving linear
equations.
26. Lee can mow a lawn in 30 minutes. It takes Ito 50 minutes to mow a lawn of the same
size. How long would it take them to mow the lawn if they work together?
A) 40.0 minutes
B) 20 minutes
C) 18.7 minutes
D) 80 minutes
Ans: C Learning Objective: Solve application problems involving linear
equations.
27. The length of a rectangle is 5 feet more than 5 times its width. The perimeter of the
rectangle is 202 feet. What is the length of the rectangle?
Ans: 85 feet
Learning Objective: Solve application problems involving linear equations.
Page 5
, Chapter 0.2
1. Solve by factoring.
x2 + 3x = 10
A) {–2,5}
B) {2,–5}
C) {–2,–5}
D) {2,5}
Ans: B Learning Objective: Solve quadratic equations by factoring.
2. Solve by factoring.
3x2 + 16 = 16x
A) {–4/3,4}
B) {4/3,4}
C) {3/4,4}
D) {–3/4,4}
Ans: B Learning Objective: Solve quadratic equations by factoring.
3. Solve by using the square root method.
x2 = 81
A) {–9,9}
B) {–9}
C) {9}
D) {81,–81}
Ans: A Learning Objective: Use the square root method to solve quadratic
equations.
4. Solve using the square root method.
(x – 5)2 = 4
A) 7
B) 7,3
C) 3
D) 10
Ans: B Learning Objective: Use the square root method to solve quadratic
equations.
5. Solve using the square root method.
(x + 15)2 = 10
A)
{15 + 10 , 15 – 10 }
B)
{–15 + 10 }
C)
{–15, 10 }
D)
{–15 + 10 , –15 – 10 }
Ans: D Learning Objective: Use the square root method to solve quadratic
equations.
Page 1
, Chapter 0.2
6. Solve using the square root method.
(x – 6)2 = –49
A) {6 + 7i, 6 – 7i}
B) {6 + 7i}
C) {13}
D) {13, –1}
Ans: A Learning Objective: Use the square root method to solve quadratic
equations.
7. Solve using the quadratic formula.
16 y 2 + 56 y – 91 0
A) –7 2 35
4
B)
7 2 35
4
C)
7 2 35 7 2 35
,
4 4
D)
–7 2 35 –7 2 35
,
4 4
Ans: D Learning Objective: Use the quadratic formula to solve quadratic
equations.
8. Solve by factoring.
5x2 – 405 = 0
Ans: {–9, 9}
Learning Objective: Solve quadratic equations by factoring.
9. Solve using the quadratic formula. Express your answer as a decimal to two decimal
places.
1.0x2 + 1.4x – 0.2 = 0
Ans: {0.13, –1.53}
Learning Objective: Use the quadratic formula to solve quadratic equations.
10. Solve using the square root method.
(x – 12)2 = 36
Ans: {6, 18}
Learning Objective: Use the square root method to solve quadratic equations.
Page 2
, Chapter 0.2
11. Solve using the quadratic formula.
16 y 2 + 48 y –111 0
A) 6 7 3 6 7 3
,
4
4
B) 6 7 3
4
C) –6 7 3 –6 7 3
,
4 4
D) –6 7 3
4
Ans: C Learning Objective: Use the quadratic formula to solve quadratic
equations.
12. The area of a rectangle is 135 square feet. The width is 6 feet less than the length. Find
the dimensions of the rectangle.
Ans: 15 ft by 9 ft
Learning Objective: Solve quadratic equations by factoring.
13. If a person drops a water balloon off the rooftop of a 121 foot building, the height of the
water balloon is given by the equation h = –16t2 + 121, where t is in seconds. When
will the water balloon hit the ground?
Ans: 2.75 seconds
Learning Objective: Use the square root method to solve quadratic equations.
14. Solve c2 – 64 = 0 for c.
A) {–8}
B) {8}
C) {–8 , 8}
D) no solution
Ans: C Learning Objective: Use the square root method to solve quadratic
equations.
15. Solve z2 = 4z for z.
A) {–2}
B) {0 , 4}
C) {–2 , 2}
D) {2}
Ans: B Learning Objective: Solve quadratic equations by factoring.
Page 3
