Mary buys a reel of thread for sewing. there are 10 m of thread on the reel. she uses 210 cm. how much is left on the reel in centimeters?

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.