Review for Test of Topic 4

Evaluate 8a - b     if a = 10   and   b = 6

• 74

• 38

• 1000

• 9000

Expand and simplify 4(7x + 3).

• 28x + 12

• 28x + 3

• 47x + 12

• 47x + 3

Factor this expression completely

8m − 24

• 8(m - 3)

• m(8 − 24)

• 4m(2 − 6)

• 4(2m − 6)

Simplify the Expression:

3m - 15 + 2m - 4

• 5m - 19

• m + 19

• 5m - 15

• 24m

​(3.2 + 4​x) + ​(18.25 + 6​x)

• 10x + 21.45

• 9.2x + 22.25

• 22.25x + 9.2

• 10x - 21.45

(7a + 4) - (9a + 2)
^{(its subtraction not addition)}

• -2a + 6

• 16a + 6

• -2a + 2

• 2a + 2

3 + 5(a - 4)

• 23 - 5a

• 5a - 23

• 5a - 17

• -18a