Subtract the expressions. (7j + 1/8q + 3) - (5/8q - 11 + 2j)

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?

Anyone know? is appreciated! will mark brainliest if correct!

10% of 1,900,000. show me how you got the answer