Help please i’m not sure what the answers are

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 average rate of change for this function for the interval from x=2 to x=4 ?

What is the value of x in the following equation. -x ^3/2 = -27