Unit 3 Test Review

Which expressions represents the sentence “seven times a number, n”?

• 7-n

• 7 + n

• 7n

Which expression is equivalent to 9 (x + 3)?

• (9 + x)(9 + 2)

•  x + 27

• 9x + 3

• 9x + 27

Which number has the largest value?

Distribute.

3 (y + 6 )

• 9y

• 21y

•  3y + 6

• 3y + 18

• 81

• 12

• 8181

• 34

What is the coefficient in the following expression?

4x + 9 - 15

• 9

• -15

• 4

• x

 If w = 45, what is the value of 2 ( w − 5 )?

• 45

• 80

• 85

• 5

List the constant(s) in the following expression.

3x  – 6xy + 9y  + 4

• 3, -6, 9

• 3, 9

• x, xy, y

• 4

How many variables are in 10 − 3x + 4y − 2z?

• 1

• 2

• 3

• 4

The number 3 is the __________of 3xyz.

• Exponent

• Coefficient

• Variable

• Term