Unit 2 Review - Exponential Functions

Is the pictured graph growth, decay, or linear or none?  

• Exponential Growth
• Exponential Decay
• Linear
• None

Tags

CCSS.HSF-IF.C.7E

Is the pictured graph growth, decay, or linear or none?  

• Exponential Growth
• Exponential Decay
• Linear
• None

Tags

CCSS.HSF-IF.C.7E

What is the initial value of the situation represented by y = 0.05(2)^x?

• 0.05

• 2

• 0.1

• 1

Tags

CCSS.HSF.LE.B.5

A new savings account is opened with $400 and gains 3% every year. What is the exponential function?

• y=400(1+3)^x

• y=400(1-0.03)^x

• y=400(1+0.03)^x

• y=400(0.03)^x

Tags

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 exponential equation?

• y=8(15,000)^x
• y=15,000(1.08)^x
• y=15,000(0.92)^x
• y=15,000(0.08)^x

Tags

CCSS.HSF.LE.A.2

 In recent years, the number of students who participate in cheerleading has decreased. The function  

$y=24,200\left(0.986\right)^x$

where y is thousands, and x is the number of years since 2005, models the number of people who are on their high school cheerleading team. Estimate the number of students who are on their high school cheerleading team in 2012.  Round your answer to the nearest whole number.

Michael invested $5000 into an account that has a 5.5% interest rate that is compounded quarterly. What equation best describes this investment after t years?

• $y=5000\left(1+0.055\right)^t$

• $y=5000\left(1+\frac{0.055}{12}\right)^{12t}$

• $y=5000\left(1+\frac{0.055}{2}\right)^{2t}$

• $y=5000\left(1+\frac{.055}{4}\right)^{4t}$

Tags

CCSS.HSF.LE.A.2

The half-life of carbon-14 is approximately 6000 years. If we have 800 grams of this substance, how much of it will remain after 30,000 years?

Tags

CCSS.HSF.LE.A.4

If g(x) is a transformation of f(x), describe the transformation.

 $f\left(x\right)=2^x$      $g\left(x\right)=2^x+4$   

• Up 4 units

• Down 4 units

• Left 4 units

• Right 4 units

Tags

CCSS.HSF.BF.B.3

What is the transformation?

• Horizontal Translation left 2
• Vertical Translation down 2
• None
• Reflection across the line y=0

Tags

CCSS.HSF.BF.B.3