This is probably easy, but I'm not smart so help Jeff is building a circular plaque with a radius of 8 inches. He wants to cover about half of the plaque in circular rhinestones. If each rhinestone has a diameter of 0.5 inches, approximately how many rhinestones will he need?

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.