Algebra 1

Warm-up 30

1. If the area of a square is , what is the perimeter?29x

xD

xC

xB

xA

1.5.

9.

12.

25.20.

2. Pampered Paws Boarding board cats and dogs while their owners are on vacation. This weeks ratio of cats to dogs is 3:5. If there are 40 animals boarded, how many cats are there?

A. 15

B. 20

C.24

D.25

3. The area of a picture from a t-ball game is 15 square inches. If the picture is enlarged for a poster, by multiplying both dimensions by 5. What is the area of the poster?

A. 75 square inches

B. 150 square inches

C.225 square inches

D.375 square inches

4. Video Games and More rents video games for $7 for 5 days, and $1.50 for each additional day. Which equation best represents the total cost, c, for renting a video game d days?

A. c = 7d + 5

B. c = 7 + 1.50d

C.c = 7 + 1.50(d – 5)

D.c = 1.50 + 7d

5. Which inequality best represents the graph shown below?

32

3.

32

3.

33

2.

33

2.

xyD

xyC

xyB

xyA

6. The area of a rectangle is represented by the expression

and the length is represented by .

Which expression best represents the width?

36162 xx 18x

2.

34.

2.

18.

xD

xC

xB

xA

7. What is the rate of change for the graph of y = -5?

A. -5

B. 1

C.0

D.undefined

8. What is the x-intercept for the equation 3x – 7y = 42?

A. -6

B. 6

C.14

D. -4

9. An angle is represented by the expression (2x + 10)°. What values of x will make this angle obtuse?

A. 90 < x < 180

B. 0 < x < 90

C. -5 < x < 40

D.40 < x < 85

10. The area of a rectangle is , and the width is . What is the length?

8640 yx 424 yx

44

24

128

128

10.

36.

44.

160.

yxD

yxC

yxB

yxA

A1 warm-up 30

1. B, obj 10, 8.14B2. A, obj 9, 8.1B3. D, obj 8, 8.10A4. C, obj 1, A.1C (Ab1C)5. C, obj 1, A.1D (Ab1D)6. D, obj 2, A.4A (Ab4A)7. C, obj 3 A.6A (Ac2A)8. C, obj 3, A.6E (Ac2E)9. D, obj 4, A.7B (Ac3B)10. D, obj 5, A.11A (Ad3A)