# Math help!

posted by KG

The number of students taking sophomore mathematics at Union College has been decreasing at the rate of 20 per year for many years. Assuming this trend continues, write a multiplication problem that describes the change in the number of sophomores taking mathematics at Union for each of the following:
a: The change over the next 5 years
b: The situation 5 years ago
c: The change over the next n years
d: The situation n years ago

1. Steve

clearly, at a change rate of -20 per year,

(a) -20(5) = -100
(b) -20(-5) = +100
(c) -20n
(d) -20(-n) = +20n

2. Lawyer

for A do -20x5 then for B 20x5 C -20xn then for D 20xn. I think this is correct but not 100% sure so please correct me if I am wrong.

3. KG

Thank you very much, I appreciate it. You were correct.

4. Donisha

what is the comparison ratio in lowest terms of the numbers 168 hours to 10 days

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