when a crew rows with the current, it travels 21 miles in 3 hours. Aginst the current, the crew rows 9 miles in 3 hoyrs. let x= rhe crew's rowing rate in still water and let y= the rate of the current. find the rate of rowing in still water and the rate of the current

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