A person invested $
3
,
600
$3,600 in an account growing at a rate allowing the money to double every 7 years. How much money would be in the account after 17 years, to the nearest dollar?

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Hi, can anyone show me how to do this problem? 100 points for this. in advance

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)