Exponential Functions Review Compound Interest

Is the function shown increasing or decreasing?

• increasing

• decreasing

• trick question

• not enough information

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

• SLOPE

• RATE OF CHANGE

• Y-INTERCEPT

• COMMON RATIO

Give the rate of decay:
y = 35(0.65)^x

• 35%

• 65%

• .35%

• 165%

What is the horizontal asymptote for the graph of
f(x)=-2(3)^x+4-8 ?

• y=8

• y=-8

• x=-8

• x=-4

Whats the horizontal asymptote?

• (0,3)

• y=3

• y=-2

• y=2

What does the n stand for in this formula?

• Initial amount

• Final amount

• Rate

• Time

• The number of times compounded per year

What does the r stand for in this formula?

• Initial amount

• Final amount

• Rate

• Time

• The number of times compounded per year

Jasmine puts $4000 into an a savings account which offers 8% interest and compounds interest continuously for 3 years. Which equation would you use to see how much money Jasmine will have after 3 years?

• A=4000(1+.08)³

• A=4000e^(.08)(3)

• A=4000(1+3)^.08

• A=4000(1+.08/3)³⁽³⁾

• Because the 25 was bigger than one

• Because the 0.20 was bigger than one

• Because the 25 was less than one

• Because the 0.20 was less than one

• Compound Continuous Interest

• Linear Growth

• Exponential Growth

• Exponential Decay