Test Bank for College Algebra 8th Edition Blitzer

Blitzer College Algebra 8e Chapter 0 Test Item File MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Evaluate the algebraic expression for the given value or values of the variable(s). 1) 8x + 6; x = 5 A) 14 B) 46 C) 80 D) 34 Objective: (1) Evaluate Algebraic Expressions 2) 5x + 6; x = -2 A) -4 B) -16 C) 16 D) 4 Objective: (1) Evaluate Algebraic Expressions 3) 2(x + 4) + 19; x = -11 A) 5 B) -17 C) 55 D) -5 Objective: (1) Evaluate Algebraic Expressions 4) 3x2 + 4y; x = 9 and y = 7 A) 1,785 B) 271 C) 183 D) 757 Objective: (1) Evaluate Algebraic Expressions 5) (x + 4y)2; x = 3 and y = 3 A) 15 B) 49 C) 30 D) 225 Objective: (1) Evaluate Algebraic Expressions 6) 6 + 6(x - 7)3; x = 9 A) 96 B) 54 C) -42 D) 18 Objective: (1) Evaluate Algebraic Expressions 7) x2 - 3(x - y); x = 6 and y = 4 A) -42 B) 14 C) 22 D) 30 Objective: (1) Evaluate Algebraic Expressions 8) 9(x + 5) 2x + 4 ; x = 7 A) 6 B) 12 C) 1 D) 17 2 Objective: (1) Evaluate Algebraic Expressions 9) y - 7x 2x + xy ; x = -3 and y = 4 A) - 4 3 B) - 17 6 C) - 25 18 D) 17 18 Objective: (1) Evaluate Algebraic Expressions 1 DOWNLOAD THE Test Bank for College Algebra 8th Edition Blitzer Solve. 10) The formula C = 5 9 (F - 32) expresses the relationship between Fahrenheit temperature, F, and Celsius temperature, C. Use the formula to convert 59°F to its equivalent temperature on the Celsius scale. A) 51°C B) 15°C C) 3°C D) 49°C Objective: (2) Use Mathematical Models 11) A stone is dropped from a tower that is 810 feet high. The formula h = 810 - 16t2 describes the stone's height above the ground, h, in feet, t seconds after it was dropped. What is the stone's height 3 seconds after it is released? A) 676 ft B) 666 ft C) 641 ft D) 691 ft Objective: (2) Use Mathematical Models 12) If a rock falls from a height of 80 meters above the ground, the height H (in meters) after x seconds can be approximated using the formula H = 80 - 4.9x2. What is the height of the rock after 2 seconds? A) -16.04 m B) 70.2 m C) 60.4 m D) 300.4 m Objective: (2) Use Mathematical Models 13) As the relative humidity increases, the temperature seems higher than it is. The formula T = 0.118x + 59.63 approximates the apparent temperature for an actual temperature of 65°F, where x is the relative humidity. What is the apparent temperature (to the nearest degree) for a relative humidity of 50%? A) 60°F B) 66°F C) 110°F D) 352°F Objective: (2) Use Mathematical Models 14) The winning times (in seconds) in a speed-skating event for men can be represented by the formula T = 46.96 - 0.096x, where x represents the year, with x = 0 corresponding to 1920. (For example in 1992, x would be = 72.) According to the formula, what was the winning time in 1999? Round to the nearest hundredth. A) 39.38 sec B) 41.30 sec C) 40.34 sec D) 3,702.26 sec Objective: (2) Use Mathematical Models 15) It is estimated that y, the number of items of a particular commodity (in millions) sold in the United States in year x, where x represents the number of years since 1990, is given by the formula y = 1.29x + 4.37. That is, x = 0 represents 1990, x = 1 represents 1991, and so on. According to the formula, how many items sold in 1999? A) 4.37 millions B) 50.94 millions C) 17.27 millions D) 15.98 millions Objective: (2) Use Mathematical Models Find the intersection of the two sets. 16) {2, 7, 5, 8} {5, 6, 2} A) {2} B) {2, 5} C) {2, 5, 8, 7, 6} D) Objective: (3) Find the Intersection of Two Sets 17) {2, 7, 8} {5, 11} A) {2, 8} B) {7, 8} C) D) {2, 5, 8, 7, 11} Objective: (3) Find the Intersection of Two Sets 18) {4, 6, 7, 9} A) {4, 6, 7, 9} B) {7, 9} C) D) {4, 6} Objective: (3)