What values of x and y make the given rational expression (3v - 12) / (v^2 - 16) undefined

Find the values of y: 3y^3(y^2+ 2/3y)=0

Which expression is rational? 6. , square root two, square root 14, square root 49

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