the first keeping the moon in its orbit around the Earth is inversely proportional to the square of the distance from the earth .if F=6×10^5 KN and R=8×10^8m .Find the equation connecting FandR​

Melissa is purchasing a $160,000 home and her bank is offering her a 30-year mortgage at a 4.9% interest rate. in order to lower her monthly payment, melissa will make a 20% down payment and will purchase 3 points. what will her monthly mortgage payment be? a. $645.98 b. $650.46 c. $662.93 d. $606.69