ESTUDYR
WGU C957 PRE-ASSESSMENT: APPLIED ALGEBRA (FXO1)
(PFXO) 2026 MOST TESTED QUESTIONS AND ANSWERS
GRADED A+ WITH RATIONALES
1. An entrepreneur earns five times the amount invested. If E(l) represents earnings and l
represents the investment, which function notation represents investing $1,000?
A. E(5000) = 1000
B. E(1000) = 5000
C. 1000E = 5000
D. E = 1000(5)
Answer: B
Rationale:
If earnings are five times the investment:
E(l) = 5l
E(1000) = 5(1000) = 5000
2. The model A(S) represents number of applicants based on weekly salary. What does
A(1500) = 1000 mean?
A. 1500 applicants apply for $1000 salary
B. 1000 employees earn $1500
C. If salary is $1500 per week, 1000 people will apply
D. 1500 applicants apply weekly
Answer: C
Rationale:
Function notation A(1500) = 1000 means input (salary) produces output (applicants).
3. A truck rental company charges $69.50 for 50 miles. Which notation represents this?
A. C(50) = 69.50
B. m(69.50) = 50
C. C(69.50) = 50
D. m(50) = 69.50
,ESTUDYR
Answer: A
Rationale:
C(m) represents cost based on miles driven.
4. P(x) represents profit when x candy bars are sold. What does P(400) = 240 mean?
A. 400 candy bars remain
B. 240 bars were sold
C. Profit is $400
D. Selling 400 bars results in $240 profit
Answer: D
Rationale:
Function output is profit; input is quantity sold.
5. The discount model is D(c) = c − 0.15c. What does this represent?
A. 85% discount
B. Employee pays 15%
C. Employee receives 15% discount and pays 85% of original price
D. Price increases 15%
Answer: C
Rationale:
c − 0.15c = 0.85c → employee pays 85% of original price.
6. A profit graph shows profit increases to $50,000 after year one, except for a jump in year
five. What does this indicate?
A. Linear growth
B. Constant decrease
C. Generally increasing profit with an unusual spike in year five
D. No growth trend
Answer: C
, ESTUDYR
Rationale:
Trend upward but non-linear jump indicates anomaly or event.
7. Investment accounts for about what percentage of GDP?
A. 17% stocks and bonds
B. 20% financial assets
C. 17% fixed investment including capital equipment and inventories
D. 19% excluding housing
Answer: C
Rationale:
GDP investment includes capital goods, construction, inventory changes (~17%).
8. If growth remains above 1% between 2016–2021, what does this imply?
A. Negative growth
B. No change
C. Sustained positive economic expansion
D. Recession
Answer: C
9. If a jewelry artist must sell 200 items to break even, what does this represent?
A. Profit maximization
B. Break-even point
C. Revenue maximum
D. Loss threshold
Answer: B
10. Point I represents R(1961) = 0.3. What does this mean?
A. Revenue in 0.3 was 1961
B. In 1961, the rate/value was 0.3
C. 1961% growth
D. 0.3 years
WGU C957 PRE-ASSESSMENT: APPLIED ALGEBRA (FXO1)
(PFXO) 2026 MOST TESTED QUESTIONS AND ANSWERS
GRADED A+ WITH RATIONALES
1. An entrepreneur earns five times the amount invested. If E(l) represents earnings and l
represents the investment, which function notation represents investing $1,000?
A. E(5000) = 1000
B. E(1000) = 5000
C. 1000E = 5000
D. E = 1000(5)
Answer: B
Rationale:
If earnings are five times the investment:
E(l) = 5l
E(1000) = 5(1000) = 5000
2. The model A(S) represents number of applicants based on weekly salary. What does
A(1500) = 1000 mean?
A. 1500 applicants apply for $1000 salary
B. 1000 employees earn $1500
C. If salary is $1500 per week, 1000 people will apply
D. 1500 applicants apply weekly
Answer: C
Rationale:
Function notation A(1500) = 1000 means input (salary) produces output (applicants).
3. A truck rental company charges $69.50 for 50 miles. Which notation represents this?
A. C(50) = 69.50
B. m(69.50) = 50
C. C(69.50) = 50
D. m(50) = 69.50
,ESTUDYR
Answer: A
Rationale:
C(m) represents cost based on miles driven.
4. P(x) represents profit when x candy bars are sold. What does P(400) = 240 mean?
A. 400 candy bars remain
B. 240 bars were sold
C. Profit is $400
D. Selling 400 bars results in $240 profit
Answer: D
Rationale:
Function output is profit; input is quantity sold.
5. The discount model is D(c) = c − 0.15c. What does this represent?
A. 85% discount
B. Employee pays 15%
C. Employee receives 15% discount and pays 85% of original price
D. Price increases 15%
Answer: C
Rationale:
c − 0.15c = 0.85c → employee pays 85% of original price.
6. A profit graph shows profit increases to $50,000 after year one, except for a jump in year
five. What does this indicate?
A. Linear growth
B. Constant decrease
C. Generally increasing profit with an unusual spike in year five
D. No growth trend
Answer: C
, ESTUDYR
Rationale:
Trend upward but non-linear jump indicates anomaly or event.
7. Investment accounts for about what percentage of GDP?
A. 17% stocks and bonds
B. 20% financial assets
C. 17% fixed investment including capital equipment and inventories
D. 19% excluding housing
Answer: C
Rationale:
GDP investment includes capital goods, construction, inventory changes (~17%).
8. If growth remains above 1% between 2016–2021, what does this imply?
A. Negative growth
B. No change
C. Sustained positive economic expansion
D. Recession
Answer: C
9. If a jewelry artist must sell 200 items to break even, what does this represent?
A. Profit maximization
B. Break-even point
C. Revenue maximum
D. Loss threshold
Answer: B
10. Point I represents R(1961) = 0.3. What does this mean?
A. Revenue in 0.3 was 1961
B. In 1961, the rate/value was 0.3
C. 1961% growth
D. 0.3 years
