Sake saved 24 dollars each after the first she saved 6 dollars how much money will she have in 6 weeks

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?