prcithce,
iVIath 1090,OO3 uizO
SP 2016
iiID #:
Class ID #:
Instructiolls:
• Please clear your desks and remove headphones and hats during the quiz.
• Show all work, as partial credit will be given where appropriate. If no work is shown, there
may be no credit given.
• All final answers should be written in the space provided on the quiz and in simplified
form. When needed, give your answer as an exact amount, i.e. a fraction or symbolic
expression, except for dollar amounts which should be rounded to the nearest cent.
• Scientific calculators are allowed on this quiz.
AXES!
LABEL ALL LINES AND
• If your phone is out during the quiz it will be considered a cheating offense
put your phone away!
1
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Math 1090.002
62s
13 November 2015
1. Carbon-14 has a half-life of 5730 years. The amount y(t) of carbon-14 present after t years is
given by y = yo() O where Yo is the initial amount present at t
18, 000 years, if the initial amount was 10 grams?
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13 November 2015
Math 1090.002
2. For the function f(x)
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1, answer the following:
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(a) What is the domain of the functioi?
(b) What is the x-intercept?
(c) Sketch the graph of .1(x):
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7. Solve these equations. (Note: Be sure to check your answers and state only the valid solutions.)
(a)(1O points) 2
(x
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x=1
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c*;
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05 2000
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Mathematics of Finance
Part 1: “Leave it Alone” Finances: Compound and Simple Interest
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iAPY: What if we want to compare the totalinterest earned across multiple investment methods?
(1) Simple Interest:
APYzr
(2) Periodic Compounding Interest:
APY(1 +--) —1
(3) Continuously Compounding Interest:
APY = er_i
APY is the percent increase in your account over 1 year.
i.e. the simple interest rate necessary to earn the amount of interest
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