CAT Intro to Exponential Functions

Which of the following is NOT an exponential function?

• $g\left(x\right)\ =\ x^{3\ }+2x-1$

• $f\left(x\right)\ =\ \frac{1}{2}^{-x}$

• $h\left(x\right)\ =3^{x\ }$

• All of the Above are Exponential Functions

 $f\left(x\right)=4^{-x}$  Evaluate  $f\left(3\right)$  .

•  $64$  

•  $\frac{1}{64}$  

•  $-64$  

•  $-\frac{1}{64}$  

Tags

CCSS.HSF-IF.C.8B

 $f\left(x\right)\ =8^{x\ }+4$  Evaluate  $f\left(\frac{1}{3}\right)$  

• 8

• 4

• 2

• 6

Tags

CCSS.HSF-IF.C.8B

Solve 3³ = 3^{4x + 2}

• x = ¼
• x = -¼
• x = ½
• x = -½

Tags

CCSS.HSF.LE.A.4

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSF.BF.B.5

To solve 8 = 2^5x+7, you would need to re-write 8 as what base?

• 8
• 4
• 2
• Cannot be determined

Tags

CCSS.8.EE.A.1

Solve: 9^8-x = 27^x-3

• x = 5
• x = -5
• x = 1/5
• x = -1/5

Tags

CCSS.HSF.LE.A.4

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSF.BF.B.5

Solve for a:
5^{a + 2} = 1/125

• -1
• -6/7
• -5
• 4

Tags

CCSS.HSF.LE.A.4

10^2x+4 =100000

• x=7
• x=20
• x=-1/2
• x=1/2

Tags

CCSS.7.EE.B.4A

Solve for x:
(1/8)^x = 2³

• x=−3
• x=3
• x=−1
• x=1

Tags

CCSS.6.EE.B.7

Identify the base of the exponential function

 $f\left(x\right)=-4\cdot3^x$  

• -4

• 3

• -12

•  $\frac{1}{3}$