6th grade math help me please

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.

In which form is the following function written? y = - 2(x – 3)(x + 5)

If there are 3.281 feet in 1 meter, how many inches are in one centimeter