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For grade credit, submit over the internet by 11:59 PM (= 23:59 hours) on Sunday 31 January 2016 |
Math 76O-143 Finite Mathematics
Self-marking Homework Assignment #1
Submit over the internet by 11:59 PM on Sunday 31 January 2016
Maximum value toward semester grade is 2 pts
In-class paper quizzes lack highlighted areas
Methods will be discussed in class;
CAUTION: Prof McFarland makes new tests each semester.
[1] |
(a)(2 pts) Cell Touch (a phone company) just breaks even when a customer uses his cell phone
40 minutes per month, but makes a profit of $20 when that customer uses 80
minutes per month. If P is the profit Cell Touch makes on a customer
who uses his cell phone x minutes per month, complete a linear equation
relating P and x below. Enter numbers below, such as 3, 0, or -5.6
Scoring : One point for each correct number below |
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I can solve these problems ; can you? |
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For the following 3 questions, you must name the formula you plan
to use (for half-credit), and then enter the
answer to the question (for another half-credit).
On paper tests, these instructions will be
somewhat different. See an example ? |
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Your available choices of formulas (not given on in-class paper tests) are : |
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Formula #1 |
Formula #2 |
Formula #3 |
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Failure to practice this kind of problem accounted for
more lost points than any other problem type on this test |
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[2](a) |
(1 pt) Lara is about to receive
$40,000 from a bond bought 4 years ago at an annual interest rate of 7%
compouded monthly. How much did Lara pay for this bond? (See instructions above) |
[2](b) |
(2 pts)Mrs. Betz signs a contract to lease a car from
Ace Rentals; the rental payments are $450 at the end of
each month for 2 years. Ace Rentals immediately sells this
contract to it's bank. If the annual interest is 9% compounded monthly,
what should the bank pay to Ace Rentals?
(See instructions above) |
[2](c) |
(2 pts)
The price tag on Chris' new car is $12,OOO. Chris makes a down payment
of 25% of that price, and finances the rest with a loan bearing
12% annual interest compounded monthly, to be paid off in
equal amounts at the end of each month for 36 months. What is
Chris' monthly payment? (see directions in the box above) |