Unit 4 Review

What is the value of 3^2?

• 5

• 6

• 9

• 27

What is the value of the expression below? 3 X 7 + 2³ ÷ (3 + 1)

• 7.25

• 23

• 3,041.75

• 4,055.67

Which expression is equivalent to (3)(3)(3)(3)(3)

• 3⁵

• 5(3¹)

• 5³

• 3¹

• 3² times 3³

Cara solves 10 homework problems every hour.

Let h represent the total number of hours she has been solving homework problems.

Which expression could be used to find the total number of homework problems Cara has solved?

• h times 10

• h divided by 10

• h - 10

• h + 10

Which of these expressions is equivalent to 3( 5 x − 2)?

• 9x

• 8x - 2

• 15x - 6

• 15x - 2

Given the expression (7 -3)(6), what is the correct order of operation?

• multiply 3 by 6, then subtract from 7

• subtract 6 from 7, then multiply by 3

• subtract 3 from 7, then multiply by 6

• multiply 7 by 3, then subtract 6

Evaluate 2a + 4b 
if a = 10     and    b = 6

• 20
• 24
• 44
• 4

Evaluate when a = 15:
2(a - 5) + 2

• 22
• 27
• 14
• 7

b² + 4
when b = 3

• 10
• 12
• 13
• 11

Evaluate the expression.   Let g = 3    h = 9 
4h + 2g + 4

• 42
• 46
• 34
• 58