Topic 4 Test Review

Write/Evaluate Expressions

100

the quotient of 10 and a number x

10/x

200

8 fewer than x

x - 8

300

Substitute and solve

5a - 7b when a=8 and b= -2

54

400

Substitute and solve

-9a + 6b  when a=7 and b= -3

-81

500

Write an expression and solve.

The height of a tree begins at 3 feet and grows 2 feet every year. How tall is the tree after 4 years?

11 feet

Simplify Expressions

100

9x + 8y + 10x + 7y

19x + 15y

200

-15x + 8 - 12 + 7x

-8x - 4

300

21x + 7y + 4x - 12

25x + 7y - 12

400

-10x - 17 + 8x + 4x - 4

2x - 21

500

18x - 4y + 9 - 7y - 20x - 3x + 8

-5x - 11y + 17

Expand Expressions

100

8(4x + 12)

32x + 96

200

7(5x - 6)

35x - 42

300

-9(11x - 4)

-99x + 36

400

-7(-8x - 9)

56x + 63

500

-4(3x - 7y + 12)

-12x + 28y - 48

Factor Expressions

100

3x + 30

3(x + 10)

200

12x + 36

12(x + 3)

300

60x - 40

20(3x - 2)

400

24x + 16y - 40

8(3x + 2y - 5)

500

26x - 39y + 65

13(2x - 3y + 5)

Add/Subtract Expressions

100

(9x + 6) + (10x + 8)

19x + 14

200

(18x - 7) + (15x + 12)

33x + 5

300

(-7x + 10) - (12x - 13)

-19x + 23

400

(14x + 5) - (15x + 16)

-x - 11

500

(-10x - 7) - (11x - 5)

-21x - 2