How to factor with the quadratic fourmula. n2-18n+66=0

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

10% of 1,900,000. show me how you got the answer

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