If a = 3-272, find the value of a²-1/a².
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A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

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.

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')