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Evaluate. 1) 2x + 5 for x = 4

Question : Evaluate. 1) 2x + 5 for x = 4 : 2151894

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Evaluate.

1) 2x + 5 for x = 4

A) 13

B) 3

C) 16

D) 7

2) -8x - 5 for x = -5

A) -45

B) 45

C) 35

D) -35

3) 7x - 4 for x = - (2/5)

A) (6/5)

B) - (34/5)

C) -18

D) - (18/5)

4) (1/3)x + 6 for x = -7

A) (11/3)

B) -1

C) - (25/3)

D) - (1/3)

5) 11 - 10x for x = 9

A) -79

B) 10

C) -8

D) 101

6) -1.6(2.2 - x) for x = 3.4

A) -1.92

B) 1.92

C) -6.92

D) 6.92

7) 4x2 for x = -5

A) -100

B) -40

C) 40

D) 100

8) -5x2 for x = -12

A) -120

B) -720

C) 120

D) 720

9) (6x)2 + 5x for x = 2

A) 149

B) 82

C) 34

D) 154

10) 9 - x2 for x = -7

A) 58

B) 23

C) -40

D) -5

11) -4x2 + 2x - 9 for x = -2

A) 11

B) 3

C) -21

D) -29

12) 8x2 + 9x for x = 4

A) 100

B) 92

C) 68

D) 164

13) (3/2)x2 - 6 for x = 5

A) 12

B) 31(1/2)

C) 9

D) 34(1/2)

14) -x2 - 5z for x = -2, z = -4

A) 16

B) -24

C) 14

D) -16

15) -5xy + 10y - 7 for x = -2, y = 1

A) -7

B) 27

C) 13

D) 20

16) (13x - 9y/x + 14) for x = 7, y = 8

A) (19/22)

B) (41/22)

C) (19/21)

D) (41/21)

17) -3x2 - 4xy + 2y2 for x = 5 and y = -2

A) 78

B) 281

C) -27

D) -87

18) (y - 8x/5x + xy) for x = -2 and y = 4

A) - (14/9)

B) 6

C) (2/3)

D) - (10/9)

19) a2 - 2abc - c2 for a = -9, b = 4, and c = 8

A) -559

B) 593

C) 431

D) 721

20) (a2 - 5ab/2b) for a = -3 and b = -2

A) - (21/4)

B) - (39/4)

C) (7/2)

D) (21/4)

Solve the problem.

21) A poster is in the shape of a parallelogram. The base measures 34 inches, and the altitude measures 24 inches. What is the area of the poster?

A) 116 square feet

B) 816 square feet

C) 1632 square feet

D) 58 square feet

22) A square component in a television set measures 22 centimeters per side. Next year's design will contain the same square component, but its side will measure only 19 centimeters. By how much will the area of the square be decreased?

A) 9 square centimeters

B) 12 square centimeters

C) 361 square centimeters

D) 123 square centimeters

23) A window is in the shape of a trapezoid. The altitude of the window is 46 inches. One base measures 28 inches, and the other base measures 25 inches. What is the area of the window?

A) 69 square inches

B) 1219 square inches

C) 32,200 square inches

D) 2438 square inches

24) In a home economics class, students cut triangular pieces of fabric for a quilt. Each triangle had a base of 18 centimeters and an altitude of 15 centimeters. What was the area of each triangular piece of fabric?

A) 270 square centimeters

B) 540 square centimeters

C) 135 square centimeters

D) 16.5 square centimeters

25) A circular pizza in a contest for the world's largest pizza has a radius of 8 feet. What is the area of the pizza? (Use π ≈ 3.14 and round to 2 decimal places, if necessary.)

A) 50.24 square feet

B) 401.92 square feet

C) 200.96 square feet

D) 64 square feet

26) The expression (5/9)(F - 32) can be used to convert Fahrenheit to Celsius degrees. On January 29, the high temperature was 59° F. Find the corresponding Celsius temperature (to the nearest degree).

A) 49°C

B) 15°C

C) 1°C

D) 33°C

27) The temperature recorded on a thermometer was 7°C. Find the corresponding temperature in degrees Fahrenheit. Use the formula F = (9/5)C + 32.

A) 35.9°F

B) 44.6°F

C) -19.4°F

D) -28.1°F

28) Aaron's map shows that he needs to drive 59 more kilometers to reach his destination. Approximately how many more miles must he drive? Use the formula Miles = 0.62k, where k is the number of kilometers. (Round to the nearest tenth of a mile.)

A) 48.1 miles

B) 95 miles

C) 36.6 miles

D) 31.8 miles

29) Find the total cost of tiling a rectangular floor that is 5 meters long and 9 meters wide if it costs $7.79 to tile one square meter. Round to the nearest cent.

A) $218.12

B) $45.00

C) $109.06

D) $350.55

30) A semicircular window of radius 20 inches is to be laminated with a coating that costs $1.10 per square inch to apply. What is the total cost of coating the window, to the nearest cent? (Use π ≈ 3.14).

A) $138.16

B) $345.40

C) $690.80

D) $4338.22

Solution
5 (1 Ratings )

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Algebra 1 Year Ago 44 Views
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