How do I give points and how do I earn points HELP ME

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?

Need showing work for this problem 56.25 ×25.80

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2