Exam 4 Review MTH 120 Beginning Algebra

Chapters 7 and 8

Factor each of the following completely.

1) 7)

2) 8)

3) 9)

4) 10)

5) 11)

6) 12)

Solve each of the following equations.

13) 16)

14) 17)

15)

18) The area of a rectangle is 204 square feet. Determine the length and width of the rectangle if the length is 5 feet greater than the width.

19) The Pine Hills Neighborhood Association has determined that the cost, C, to make x dozen cookies can be estimated by the formula . If they have $100 to be used to make the cookies, how many dozen cookies can the association make to sell at a fund raiser?

Simplify.

20) 21)

Perform the indicated operations.

22)

23)

24)

25)

26)

27) Simplify:

Solve the following equations.

28)

29)

30)

31)

32) Sandra can paint a kitchen in 7 hours and Roger can paint the same kitchen in 10 hours. How long would it take if they worked together to paint the kitchen?

33) Robert Johnston can travel 3 miles on his roller blades in the same time Tran Lee can travel 8 miles on his mountain bike. If Tran’s speed on his bike is 3.5 miles per hour faster than that of Robert on his roller blades, determine Robert’s and Tran’s speeds.

Math 120 Exam #4 Review - Chapters 7 and 8 Answer Key

1)

2)

3)

can’t be factored

4)

5)

can’t be factored

6)

7)

8)

9)

10)

11)

12)

13)

14)

15)

16)

17)

18)

19)

20)

21)

22)

23)

24)

25)

26)

27)

28)

29)

30)

31)

32) t = time to paint the kitchen together

33) R = Robert’s speed

R+3.5 = Tran’s speed