
Unit 3 Test Review Algebra
Authored by Maria Savva
Mathematics
8th Grade
CCSS covered
Used 10+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jack started a new fitness program. The first day he did 12 push-ups. The program
required him to increase the number of push-ups each day by doing 9 more than the
previous day. Which explicit formula correctly models Jack’s new program, where n is the
number of days and an is the number of push-ups on the nth day?
a) an = 9 + 12n − 1)
an = 12 + 9(n − 1)
an = 12 + 9n
an = 9 + 12n
Tags
CCSS.HSF.BF.A.2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The 22th term of the sequence -5, -11, -17, -23, ... is
111
131
-111
-131
Tags
CCSS.HSF.BF.A.2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The equation A = 6700(1.015)8
is being used to calculate the amount of money in a
savings account. What does 1.015 represent in this equation?
0.015% growth
1.015% growth
1.5% growth
15% growth
Tags
CCSS.HSF.LE.B.5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Some banks charge a fee on savings accounts that are left inactive for an extended
period of time. In equation, y = 4,000(.78)x , y represents one account that was left inactive
for a period of x years. What is the y-intercept of this equation and what does it represent?
0.78, the percent of money in the
account initially
0.78, the percent of money in the
account after x years
4,000, the amount of money in the
account initially
4,000, the amount of money in the
account after x years
Tags
CCSS.HSF.LE.B.5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which situation could be modeled by a linear function?
A gym charges a $50 initial fee and then $45 monthly
The value of a car depreciates by 7% annually.
The amount of money in a bank account increases by 0.21% monthly.
The number of bacteria in a lab doubles weekly.
Tags
CCSS.HSF.LE.A.2
CCSS.8.F.B.4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sunny purchases a new car for $29,873. The car depreciates 12% annually.
Which expression can be used to determine the value of the car after t years?
29,873(0.12)t
29,873(12)t
29,873(1 − 0.12)t
29,873(1 + 0.20)t
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which situation could not be modeled by an exponential function?
A population of bacteria that doubles every 3 hours
The concentration of medicine in a person’s body that decays by a factor of
one-third every two hours
A bank account balance that grows at a rate of 5% per year, compounded annually
The cost of cell phone service that charges a base amount plus 60 cents per minute
Tags
CCSS.8.F.A.3
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