WorksheetsExponential Growth and Decay (Day 2)
Total questions: 12
Worksheet time: 19mins
Find the total amount paid on a 3 years loan of $700 at an annual rate of 29% interest.
$630000.00
$17073000.00
$1502.68
$25089.00
In 1980 there were 900 residents of Sillycity. The number of residents increases by 60% every year. Write an exponential growth function to model this situation.
y=900(1.60)x
y=900(1+60)x
y=900(.40)x
y=900(1−60)x
In 1980 there were 900 residents of Sillycity. The number of residents increases by 60% every year. How many residents are there in 1988?
15,099
24,158
38,653
9,437
A bicycle depreciates at a rate of 15%. Therese bought a bicycle for $250. IS this an example of an exponential function?
yes, exponential growth
yes, exponential decay
None
A bicycle depreciates at a rate of 15%. Therese bought a bicycle for $250. Write an exponential function to model this situation.
y=250(1+.15)x
y=250(1−.15)x
y=250(.15)x
Not enough information
A bicycle depreciates at a rate of 15%. Therese bought a bicycle for $250. How much should it be worth 6 years later?
$225.00
$28.48
$94.29
$578.27
The population of Winnemucca, Nevada, can be modeled by P=6191(1.04)t where t is the number of years since 1990. What was the population in 1990?
1.04
6,191
Not enough information
0
The population of Winnemucca, Nevada, can be modeled by P=6191(1.04)t where t is the number of years since 1990. What percent did the population increase each year?
4O%
4%
.04%
It does not say
An adult takes 400 mg of ibuprofen. Each hour, the amount of ibuprofen in the person’s system decreases by about 29%. What is the constant ratio for this problem?
1.29
.29
.71
1.71
You buy a new computer for $2100. The computer decreases by 50% annually. What would be the constant ratio for this problem?
1.5
.5
1.05
None
The population of Bloom Falls, Mass. (population 937) is slowly moving to a bigger city. Every year the population drops by 4.5%. What is the common ratio for this problem?
4.5
0.955
0.045
1.045
You bought a Boston Whaler in 2004 for $12,500. The boat's value depreciates by 7% a year. How much is the boat worth in 2012?
$21,477
$11,625
$875
$6995
