WorksheetsExponential Growth and Decay
Total questions: 10
Worksheet time: 14mins
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
Select all that represent a decay model
y=7(5/7)
y=(1/9)
y=98(1.04)
y=15(.97)
y= 790,000,000(6)
Francis owns a chain of grocery stores. He has 200 stores in 1999. If the rate of increase is 8%, how many grocery stores does Francis own in 2007?
370
384
103
412
Does the function represent a growth or decay model?
Y= 40(0.5)x
Decay
Growth
Bruno was given $2000 when he was three years old. His parents invested it had a 2% interest rate. Which expression can be used to determine how much money Bruno had in the account when he turned 16?
2,000(1-0.02)^16
2,000(1+0.02) ^16
2,000(1+0.02)^13
2,000(1-0.02)^16
Mike bought a car for 25,000 in the beginning of the year. Each month the initial cost depreciates at a rate of 4%. How much will the car cost in 5 months?
$34,232.47
$93,727.93
$17,747.92
$20,384.32
There were 417 cell phone sold at an electronics store in January. Since then, system cell phone sales at the store have increased at a rate of 3.75% per month. At this rate of growth which function can be used to determine the monthly cell phone sales x months after January?
417(1.0375)
417(1.375)
417(.375)
417(0.0375)
Has your knowledge grown or decayed?
Grown
Decayed
Grown
Decayed
