Introduction to Compound Interest and Exponential Functions

Identify the y-intercept (initial value) in the function f(x)=13(.27)^x

• (.27)^x
• .27
• 13
• 3.51

Tags

CCSS.HSF.LE.B.5

Which function will show exponential behavior?

F(x) = (4.3)^x 

or

G(x) = 4.3x + 9

• F(x)

• G(x)

• both

• neither

What is the x-intercept of the exponential function? 

• (0,1)

• (0,0)

• There is not one

Tags

CCSS.HSF-IF.C.7E

In an exponential function, what does the 'a' represent? 

• SLOPE

• RATE OF CHANGE

• Y-INTERCEPT

• COMMON RATIO

Tags

CCSS.HSF.LE.B.5

Identify the y-intercept (initial value) of the function f(x)=2(4)^x.

• 2

• 4

• (2)^x

• 8

Tags

CCSS.HSF-IF.C.7E

Identify the common ratio (multiplier) of the function f(x)=2(4)^x.

• 2

• 4

• (2)^x

• 8

Tags

CCSS.HSF-LE.A.1A

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

• y = 15(35)^x

• y = 15(1.35)^x

• y = 15(0.35)^x

• y = 35(1.15)^x

Tags

CCSS.HSF.LE.A.2

What is the growth rate as a percent?

• 1.25%

• 25%

• 75%

• .25%

Tags

CCSS.HSF-IF.C.8B

Given f(x) = 8(1.05)^x

What is the growth rate as a percent?

• 50%

• .5%

• 5%

• .05%

Tags

CCSS.HSF-IF.C.8B

The equation A = 1300(1.02)^x is being used to calculate the amount of money in a savings account. What does 1.02 represent in this equation?

• 0.02% decay

• 0.02% growth

• 2% decay

• 2% growth

Tags

CCSS.HSF.LE.B.5