It's due in tomorrow morning pls help me!!

Me n o w. i need t h i s. 10 points

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

Given that s is the centroid of triangle mno, find sq.