Lesson 15: Equivalent Exponential Expressions | Unit 6: Expressions and Equations

Multiple Choice

Find the value of the expression $$2^x$$ when $$x=3$$ .

• 8

• 6

• 9

• 12

Multiple Choice

Find the value of the expression $$x^2$$ when $$x=3$$ .

• 9

• 6

• 3

• 0

Multiple Choice

Find the value of the expression $$1^x$$ when $$x=3$$ .

• 1

• 3

• 0

• x

Multiple Choice

Find the value of the expression $$x^1$$ when $$x=3$$ .

• 3

• 1

• 0

• 9

Multiple Choice

Find the value of the expression $$\left(\frac12\right)^x$$ when $$x=3$$ .

• $$\frac{1}{8}$$

• $$\frac{1}{4}$$

• $$\frac{1}{2}$$

• $$\frac{1}{16}$$

Multiple Choice

What is the value of the expression $$2 + x^3$$ when $$x$$ is 3?

• 32
• 20
• 25
• 29

Multiple Choice

What is the value of the expression $$x^2$$ when $$x$$ is $$\frac{1}{2}$$ ?

• 0
• 2
• 1
• 1/4

Multiple Choice

What is the value of the expression $$3x^2+3$$ when $$x$$ is 5?

• 60
• 78
• 90
• 45

Multiple Choice

What is the value of the expression $$40 + x^2$$ when $$x$$ is 6?

• 64
• 100
• 76
• 46

Multiple Choice

Decide if the expressions have the same value. If not, decide which expression has the greater value. Compare the expressions: $$2^3$$ and $$3^2$$ .

• The expressions have the same value.

• $$2^3$$ has the greater value.

• $$3^2$$ has the greater value.