What is the value of this expression h=8,j = -1, and k= -12?

Which function has the same domain as y=2x

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?

I’m really confused and need your assist me with this question i’ve never been taught