Geometry ?? anyone ??

A) if $50000 is invested in a bank account that pays 9.3% of interest compounded on a six-monthly basis, how much money will be in the account after 3 and 12 years? b) if matusalen's father had put $2.0 in the bank when he was born and there, how long would matusalen have had to his death (969 years later) if the interest was 7% per year composed each month and weekly?

What is the remainder when 2872 is divided by 76? a) 51 b) 57 c) 60 d) 63

You are at a restaurant and owe $56.20 for your meal. you want to leave an 18% tip. approximately how much is your tip?