Suppose that you are currently making monthly payments on a $455,689 30-year mortgage at 5.33% interest compounded monthly. For the last 8 years, you have been paying the regular
monthly payments. You now have the option to refinance your current mortgage with a new 25-
year mortgage that has an interest rate of 4.89% compounded monthly. Note that the lender of
the new loan has a closing cost fee of $1,500 (for title insurance, home appraisal costs, etc.) for
the new (refinanced) mortgage. The lender stipulates that closing cost must be paid in cash and
cannot be part of the new loan. You are to determine whether you would save or lose money in
interest if you were to refinance your home. Take the closing costs into account when
determining if you would save or lose money.

Time (minutes) amount of water (gallons) practice 1. jin fills up a 510-gallon pool in the backyard for her children. she fills it with the garden hose at a rate of 17 gallons per minute. after it is filled, she lets it sit for 30 minutes in order to let the water temperature rise. the children then get in and have fun for an hour. the pool loses about 5 gallon of water each minute due to their splashing and playing. at the end of the hour, they tear the pool while getting out, which causes a leak the pool then begins to lose water at a rate of 2 gallons per minute. a. complete the table to show the amount of water in the pool after each minute. b. create a graph to model the problem situation. include when the pool will be empty. c. write a piecewise function that models this problem situation. explain your reasoning for each piece of the function. d. identify the x- and y-intercept. explain what they mean in terms of the problem situation, atamantha a cul 80 100 120 150 200 ning, inc