Please help asap

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

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.