Exponential Functions Review

 $a^2\ \cdot\ a^7$  = 

•  $a^9$  

•  $a^5$  

•  $2a^9$  

•  $2a^5$  

 $\frac{x^5}{x^2}$  

•  $2x^7$  

•  $x^7$  

•  $x^3$  

•  $2x^3$  

 $3^{4x}\ \cdot\ 3^{2x}$  

•  $3^{2x}$  

•  $9^{2x}$  

•  $3^{8x^{2^{ }}}$  

•  $3^{6x}$  

Which represents exponential decay?

• A

• B

• C

• D

Tags

CCSS.HSF-IF.C.7E

Is the graph linear, exponential or neither?

• Linear
• Exponential
• Neither

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2

The value of a car is $15,000 and depreciates at a rate of 8% per year. What is the value after 7 years?

• $800
• $8367.70
• $6600
• $25,707.36

Tags

CCSS.HSA.CED.A.1

CCSS.HSF.BF.A.1

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2

A new savings account is opened with $400 and gains 3% every yr. What's the amount after 5 years?

• $415
• $463.71
• $343.49
• $460.12

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.SSE.A.1

CCSS.HSF.BF.A.1

CCSS.HSF.BF.A.2

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2

• The range is the set of all real numbers less than 0.
• The domain is the set of all real numbers greater than -4.
• The range is the set of all real numbers greater than 0.
• The domain is the set of all real numbers less than -4.

Simplify and rewrite with positive exponents only:
 $c^{-3}$  

•  $3c$  

•  $\frac{1}{c^3}$  

•  $c^3$  

•  $\frac{1}{3c}$  

Simplify and rewrite with positive exponents only:
 $\left(-2x^2y\right)\left(5x^{-4}y^3\right)$  

•  $-10y^4x^{2^{ }}$  

•  $10y^4x^2$  

•  $\frac{y^4}{10x^2}$  

•  $\frac{-10y^4}{x^2}$