Pls help me

macth the words with the defonitions\ math

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

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 point is the projection of q on a) r b) s c) t