Chp 6 Test Review

What is  7 x 7 x 7 x 7 x 7 x 7 in exponential form?

• 7⁵
• 7⁶
• 6⁷
• 7⁷

Which is equivalent to 2⁴?

• 8
• 20
• 16
• 12

Evaluate 7y - 3y if y=2

• 40
• 73
• 8
• 4

Evaluate the expression    np     if      n = 2 and p = 7.

• 9
• 5
• 15
• 14

A letter that represents a number is called a _____.

• variable
• coefficient
• constant
• term

Translate this phrase into an Algebraic expression.
57 more than 3 times Kate's score
Use the variable k to represent Kate's score.

• 57k + 3
• 3k - 57
• 3k + 57
• 57 - 3k

What is the variable in the expression 3a - 2?

• 3
• 3a
• a
• 2

Write an algebraic expression for:
three times a number plus 16

• 3(16)+n
• 16n+3
• 3n+16

Simplify the following:
(2 + 7 - 1) ÷ 2²

• 16
• 2
• 72.25
• 8.75

Translate the verbal phrase into an algebraic expression: 
three less than a number x squared

• x² - 3
• 3 - x²
• 3 - x
• (3-x)²