Exp Functions 2016

Solve for x:
2^{3x + 1} = 32

• 0
• -1
• 5/3
• 4/3

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

• 5
• -5
• 1/5
• -1/5

What type of function is f(x)=2(1/7)^x ?

• Exponential Growth
• Linear
• Exponential Decay
• Quadratic

What is the y-intercept of the function?

• (0, 2)
• (0, 3)
• (0, 1)
• (0, -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

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

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

Which equation matches the graph?

• y = 2^x+3
• y = 2^x + 3
• y = 2^x
• y = 2^-x

Given the function
f(x) = 3(1.230)^x, what is the rate of growth/decay?

• Growth 3%
• Growth 23%
• Decay .23
• Decay 77%

What is the common ratio of the following sequence?
40, 10, 2.5, ...

• 4
• .2
• 2
• 1/4

What is the 7th term in the following sequence?
12, 4, 4/3,... 

• 125
• 1/3
• 4/729
• 4/243