Exponential Growth and Decay Functions

Front

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

Back

Initial value

Front

Does the function represent a growth or decay function?

Back

Exponential DECAY

Front

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

Back

0.92

Front

Function with initial amount $15 and 35% increase each year?

Options: y = 15(35)^x, y = 15(0.35)^x, y = 35(1.15)^x, y = 15(1.35)^x

Back

y = 15(1.35)^x

Front

Exponential model for bacteria culture starting with 5000 cells, dying by 30% each year.

Back

y = 5000(0.70)^x

Front

The population of mosquitoes at the beginning of the summer is 4000. The population grows at a rate of 25% a month. How many will there be after 4 months?

Back

9765

Front

What type of function is y = 7(5/4)^x?

Back

Exponential GROWTH

Front

$1500 at 4% interest compounded monthly for 6 years

Back

$1906.11

Front

What are two points on the graph of y = 5(3)^x? Options: (0, 3) and (1, 15), (0, 5) and (1, 15), (0, 3) and (1, 5), (0, 5) and (1, 3)

Back

(0, 5) and (1, 15)

Front

Is the pictured graph growth, decay, or linear or none? Options: Exponential Growth, Exponential Decay, Linear, None

Back

Exponential Growth