Worksheetsconsolidation of growth, decay, compound interest, depreciation
Total questions: 11
Worksheet time: 38mins
Name
Class
Date
1.
Which of the following functions shows an initial amount of $15 and an increase of 35% each year?
a)
y = 15(35)x
b)
y = 15(1.35)x
c)
y = 15(0.35)x
d)
y = 35(1.15)x
2.
A population of fish starts at 8,000 and decreases by 6% per year. What is the population of fish after 10 years?
a)
14327
b)
4309
c)
839
d)
7680
3.
What does the model P=A(1+r)t best represent?
a)
Exponential growth
b)
Simple Interest
c)
Compound Interest
d)
Exponential Decay
4.
What type of function is f(x)=2(1/7)x ?
a)
Exponential Growth
b)
Linear
c)
Exponential Decay
d)
None of the Abovee
5.
Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.
a)
y=5000(0.7)x
b)
y=30(5000)x
c)
y=5000(1.3)x
d)
y=5000xx
6.
A 78 gram sample of Uranium loses half of its mass each year. What is the exponential equation?
a)
y=78(0.5)x
b)
y=78(1.5)x
c)
y=78(2)x
7.
What does the a in y=a(1+r)x represent?
a)
Time
b)
Rate
c)
Slope
d)
Initial Amount
8.
Is this exponential growth or decay?
a)
Growth
b)
Decay
9.
Your 6 year investment of $40,000 at 14% interest compounded annually is worth how much now?
a)
$47,798.90
b)
$87,798.90
c)
$127,798
d)
$7,798
10.
Semi-Annually means how many times a year?
a)
4
b)
2
c)
1
d)
6
11.
Principal: $5000
Interest Rate: 3.75%
Time: 25 years
Compounded Monthly
State the future account balance.
Interest Rate: 3.75%
Time: 25 years
Compounded Monthly
State the future account balance.
a)
$12712.31
b)
$12,749.30
c)
$12,657.59
d)
$12550.84
100 %
