# Ch 8 9 test sample

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```					Elementary Algebra
Fall 2000                                     Name ____________________________

Test 1
DM 0084 Ch. 8 and Ch. 9
Problems 1 - 20 are worth 3 points each. Put your answer in the box. Only the answer in
the box will be graded. Be careful.

1. Simplify: -14 – 12 + 5

2. Simplify: 10y - 5(4 + 3y)

27
3. Simplify:        4
3

4. Simplify: x + 28 +2y - 5x - 35

5. Write with a positive exponent: 257

6. Evaluate and round to the nearest thousandth (if
1
necessary). 20 3

7. . If f ( x )  x 2  3x , find f ( 2)
F 4 I  FI
G5 J G
H KHJ
8

9K
8. Simplify:

20
9. Simplify: 10( 2)        5(3  1)
4

10. Solve:      3x = 39

11. Solve:      18 = -5y

12. Solve:      -x = 3

1
13. Solve:      12      x
4

3    5
14. Solve:       x
4    8

15. Solve:      x – 7 = 24

16. Solve:      3+x=7
17. Solve:     5 – 3x = 32

18. Solve:     2(x – 4) = 18

19. Write a symbolic interpretation for the following:
“nine is equal to twice a number subtracted from
six”. Do not solve.

20. Solve:     5 + 3(x – 1) = 10

Part II. Solve each of the following problems, showing all work where appropriate. Partial
credit is possible on this part of the test.

21. (6 pts) Solve:    5x – 3 = 2x

22.(7 pts)   Solve:   7x + 4 = 2x - 9
23.(8 pts)     7 – 3(2x + 4) = 9

24.(9 pts)   2(5x + 6) – 5 = 2(2x – 4)

25. (10 pts) Set up an equation and use it to solve the following problem. You must set
up an equation in order to get credit.

Olivia purchased a used biology textbook, a speech pathology textbook, and a graphing
calculator. The speech pathology book cost \$35 more than the biology book and the
graphing calculator cost twice as much as the biology book. Olivia’s total bill, before tax,
was \$215. How much did the graphing calculator cost?

```
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