Math Unit 9 Exponents Review

Simplify x³ ⋅ x⁴

• x¹²

• x⁷

• x^-1

• x^-7

Will the product of (-14)⁴ be positive or negative and why? (select both the answer and the explanation)

• Positive

• Negative

• Because negative base with an even exponent is always positive

• Because negative base with an odd exponent is always negative

Austin solved the problem to the left. Is he right? Explain your answer.

• Austin is right because when dividing in exponential notation you can subtract the exponents and 3-5 = -2.

• Austin is incorrect because when dividing in exponential notation you can subtract the exponents and 3 - -5 = 8. Therefore his answer should be 3^8.

• Austin is incorrect because he needed to write his final answer as a positive exponent. The answer should be 1/3^2.

• None of the above.

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

• 3⁵

• 5(3¹)

• 5³

• 3¹

• 3² times 3³

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

Select all of the following that are terms in the expression 3k + 2k² + 5.

• 3

• 3k

• 2k2

• k

• 5

What is the exponent in this problem?

• 26

• 5

What does the E in PEMDAS stand for?

• Equals

• Equivalent

• Exponent

• Even

Pick the correct order for Order of Operations

• Parentheses, Multiplication, Division, Addition, Exponents, Subtraction

• Exponents, Multiplication, Division, Addition, Parentheses, Subtraction

• Parentheses, Exponents, Multiplication, Division, Addition, Subtraction