PLEASE HELP, ITS URGENT!!
Joaquin has agreed to lend his younger brother $45 so that he can buy a new tank for his pet lizard.
a) Joaquin is charging his brother 2% simple interest per month. If his brother pays him back in 6 months, how much will Joaquin get back?
b) If Joaquin’s brother instead borrowed the money from a bank at 2% compound interest per month, how much would he have to pay the bank at the end of 6 months?