I have to finish this before 4 please help

Abbey purchased a house using a fixed rate mortgage. the annual interest rate is 4.2% compounded monthly for 20 years. the mortgage amount is $235,000. what is the monthly payment on the mortgage? this isn't a multiple choice question have to show my work

What is the remainder when 2872 is divided by 76? a) 51 b) 57 c) 60 d) 63

3x + 4y = 5 x- 3y = -7 solve by substitution