Kennedy won $3,000 from a radio contest. If she puts this money in a bank account that earns 2.9% interest compounded quarterly, how much total will she earn in 10 years?
a)
$4915.59
b)
$3933.28
c)
$2979.81
d)
$4005.09
2.
Caiden earned $475 from mowing lawns last summer. He deposited this money in an account that pays an interest rate of 3.8% compounded monthly. What will be his balance after 15 years?
a)
$827.52
b)
$839.17
c)
$839.45
d)
$846.80
3.
Which of the following exponential functions represents an initial value of 1780 and a growth of 18% for x years?
(a)
เลือกจากคำด้านล่าง
y=1780(1.18)x
y=1780(0.18)x
y=1780−(0.18)x
y=1780(.82)
4.
Chloe was studying earthquake waves in Japan. The function of f(x)=354(1.15)x gives the number of waves at the end of x days. What is the growth rate for this function?
a)
The initial number of waves is 15.
b)
The initial number of waves decreases at a rate of 85% each day.
c)
The initial number of waves increases at a rate of 15% each day.
d)
The number of waves at the end of one day is 354.
5.
This is an example of:
a)
Linear Growth
b)
Linear Decay
c)
Exponential Growth
d)
Exponential Decay
6.
This is an example of:
(a)
เลือกจากคำด้านล่าง
Exponential Growth
Linear Growth
Linear Decay
Exponential Decay
7.
Select all the equations that represent exponential decay.
a)
y=21(4)x
b)
y=4(21)x
c)
y=80(1.4)x
d)
y=60(0.7)x
e)
y=3(0.6)x
8.
Please label each part of the function with the appropriate descricription.
a)
final value
b)
initial value
c)
growth/decay factor
d)
time
1
2
3
4
1)
2)
3)
4)
9.
What is the growth rate in the problem below?
f(t) = 300(1.05)t
a)
300
b)
1.05
c)
t
d)
y
10.
A new savings account is opened with $400 and gains 3% every year. What is the exponential function?
a)
f(x)=400(1+3)x
b)
f(x)=400(1-0.03)x
c)
f(x)=400(1+0.03)x
d)
f(x)=400(0.03)x
11.
A new savings account is opened with $400 and gains 3% every yr. What's the amount after 5 years?
a)
$415
b)
$463.71
c)
$343.49
d)
$460.12
12.
The value of a car is $15,000 and depreciates at a rate of 8% per year. What is the exponential equation?
a)
y=8(15,000)x
b)
y=15,000(1.08)x
c)
y=15,000(0.92)x
d)
y=15,000(0.08)x
13.
The value of a car is $15,000 and depreciates at a rate of 8% per year. What is the value after 7 years?
a)
$800
b)
$8367.70
c)
$6600
d)
$25,707.36
14.
What type of pattern do linear functions have?
a)
Adds by the same number every time
b)
Multiplies by the same number every time
c)
Square roots all the inputs
d)
Squares all the inputs
15.
What type of pattern do exponential functions have?
a)
Adds by the same number every time
b)
Multiplies by the same number every time
c)
Square roots all the inputs
d)
Squares all the inputs
16.
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
17.
If you deposited $4,000 at an interest rate of 3.4% compounded quarterly for three years what is the multiplier?
a)
1.034
b)
1.0085
c)
0.0085
d)
0.966
แป้นคำตอบ
Algebra 1 Exponential Function Review
คำถามทั้งหมด: 17
1.
d) $4005.09
2.
b) $839.17
3.
y=1780(1.18)x
4.
c)
The initial number of waves increases at a rate of 15% each day.
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