If y varies directly as x and as the square of z, and y = 25
when x = 5 and z = 1, find y when x = 1 andz = 4
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Why do interests rates on loans to be lower in a weak economy than in a strong one

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?