10. Johns annual salary is $36000, John has no car loan, the estimate per month tax payment is $200, the estimated insurance is $150, if he choose a 30-year loan, with 3% interest per year, and John pays 20% down payment, what is his affordable home purchase price?( (use 33% guideline)

11. John wants to buy house , $690000. if he choose a 30-year loan, with 4% interest per year, , what is his monthly payment? what is his total interest payment? Please show all calculations and formula.