I need help on this iready question

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet

Which representation has a constant of variation of -2.5

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.