tammy and her husband are each starting a saving plan. tammy will initially set aside and then add every month to the savings. the amount (in dollars) saved this way is given by the function , where is the number of months she has been saving. her husband will not set an initial amount aside but will add to the savings every month. the amount (in dollars) saved using this plan is given by the function . let be total amount (in dollars) saved using both plans combined. write an equation relating to . simplify your answer as much as possible.