Review Properties, Prime Factorization, order of operations

What is the prime factorization of 42?

• 2 x 21
• 6 x 7
• 2 x 3 x 7
• 4 x 2 

Which number has the prime factorization of 2³ x 3² x 5?

• 30
• 180
• 240
• 360

Which of the following expressions is equivalent to 18?
        I.    (3 + 2)² - 7
        II.   -2 + 3² + (10 - 7)² 
        III.  2² x (6 + 3) ÷ 2

• I and II only
• I and III only
• II and III only
• I, II, and III

What is the whole number equivalent of the expression (3 + 2)² - 4 x 2?

• 2
• 17
• 42
• 1

Larry had $84 in his checking account. During the month he made a deposit of $21 and  a withdraw of $3. Which expression could you use to find the balance in his checking account at the end of the month?

• 84 + 21 - 3
• 21 x 84 - 3
• 84 + 21 + 3
• 84 - 21 + 3

Simplify 75 - (2³ + 45 ÷ 3) x 7.

• 236

• -86

• -77

• 86

What value is equivalent to 3⁴ - 2³ ⋅ (5 - 2) - 60 ?

• -66

• 159

• -3

• -21

Which of the following is equivalent to the following expression?

7(x + 3)

• 7x + 3

• 7 + 3x

• 10 + 3x

• 7x + 21

13 + 4(2x + 5)

• 13 + 8x

• 8x + 33

• 8x + 20

• 17(2x + 5)

Simplify -6(x - 2)

• -6x + 12

• 6x - 12

• -6x - 2

• -6x + 2