Answer:
monthly payment=$322.52
Explanation:
cost of house=$290,000
down payment= 20%
interest monthly = 4.2%
interest rate compounded monthly so (i)=4.2/12=0.35%
months=
=360 months
down payment =

=$58000
amount to be paid(P)=$232,000

R=$322.52
sara's monthly payment will be $322.52