CAN SOMOEONE HELP WITH THIS ASAP

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?

Solve the triangle. a = 21°, c = 105°, c = 5

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test