What expression is equivalent to 1/2 divided by 2/3

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 for x and y: 217x + 131y = 913; 131x + 217y = 827

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83