Unit 2 Review Extra Practice (Optional)_ Math for the Real World
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Brigham Young University, Idaho *
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108X
Subject
Mathematics
Date
Jun 6, 2024
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6
Uploaded by DoctorOtterMaster4458
Unit 2 Review Extra Practice (Optional)
Due No due date
Points 12
Questions 12
Time Limit None
Allowed Attempts Unlimited
Instructions
Attempt History
Question 1
1 / 1 pts
None of the Tables represent functions.
This quiz is for personal practice only. You may take it as many times as you like. It will in no way affect
your grade. Take the Quiz Again
Which of the following tables represents a function?
Table 1
Table 2
Table 3
x (input) y (output)
2
2
3
2
4
2
x (input) y (output)
14
2
14
3
14
4
x (input) y (output)
0
0
-3
-3
-16
-16
Table 1 and Table 2 both represent functions but Table 3 does not represent a function.
Only Table 2 represents a function.
Only Table 3 represents a function.
Table 1 and Table 3 both represent functions but Table 2 does not represent a function.
Question 2
1 / 1 pts
-43
Question 3
1 / 1 pts
569
Question 4
1 / 1 pts
Given the function
What is ?
Consider the following function:
Where the variables have the following meaning:
= Amount accumulated = Principal
= interested rate = compounding per period = number of periods Find the value of the function when , , , and .
(Round your answer to the nearest whole number.)
We know the following two commands in Excel:
=FV(5.2/12,360,-28725,-315000)
=FV(0.052/12,30,-315000,-28725)
=PMT(0.052/12,30,-315000,-28725)
=PMT(0.052/12,360,-286275,0)
=PMT(5.2/12,360,0,-286275)
Question 5
1 / 1 pts
=FV(0.019/12,16*12,-110*4,0)
=FV(0.019/12,192,-110,0)
=FV(1.9/12,16,-110, 0)
=FV(1.9/12,16*12,0,-110*4)
=FV(0.019/12,16,0,-110)
Question 6
1 / 1 pts
59
PMT(rate, nper, PV, FV)
FV(rate, nper, pmt, PV)
Which of the following Excel commands gives the monthly payment on a house that cost $315,000 with
a down payment of $28,725. The loan was a conventional 30-year loan with an annual interest rate of
5.2%.
Robert is using the Quantitative Reasoning Process to create a plan to save for his children's education.
He knows the following two commands in Excel:
PMT(rate, nper, PV, FV)
FV(rate, nper, pmt, PV)
Robert creates a plan to save $110 dollars a month for the next 16 years in an account with an annual
interest rate of 1.9%. Which of the following excel commands will give Robert the account balance at the
end of 16 years?
Simplify the following expression:
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-58
-1
-4
2
Question 7
1 / 1 pts
Question 8
1 / 1 pts
Question 9
1 / 1 pts
Rewrite the following equation as a function of x;
Simplify the following expression:
Which of the following is an exponential function?
Question 10
1 / 1 pts
Question 11
1 / 1 pts
90.87
Question 12
1 / 1 pts
Which of the following is a quadratic function?
Nyasha used the Quantitative Reasoning Process to create a plan to pay off his student loans of $8,125.
The interest rate on his loan is 13.5% annually and he plans to make monthly payments of $138.84 for 8
years. Complete months 1 and 2 of the amortization table below.
Month
Beginning
Balance
Payment:
To
Interest
Payment:
To
Principal
Ending
Balance
1
2
??
3
How much of Nyasha's payment goes to
Interest
in Month 2?
(Round your FINAL answer to the nearest cent. Do not include the dollar sign.)
.391 feet
2.56 feet
100 feet
62.5 feet
250 feet
We learned that Galileo developed the equation to show the path of a free-
falling object:
represents time
represents the initial velocity of the object
represents the initial height of the object (in feet)
The input of the function represents how long the object has been in the air the output of the function is the final height of the object above the ground
Ramzen stood on a rope bridge over a deep cavern and wondered how high the bridge was above the
water. He dropped a rock and it took 2.5 seconds to hit the water. When he arrived safely back home he
wanted to tell people how high the bridge was, so he used Galileo's equation to estimate the height of
the bridge by figuring that when he dropped the stone it had no initial velocity, but gained speed as it fell
for the 2.5 seconds to hit the water which he figured was a height of 0. Substituting these figures into
Galileo's equation gave him . Solving for he estimated the height of the bridge
was:
h
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