19. investments kent invested $5000 in a retirement plan. he allocated x dollars of the money to a bond account
that earns 4% interest per year and the rest to a traditional account that earns 5% interest per year.
a. write an expression that represents the amount of money invested in the traditional account.
b. write a polynomial model in simplest form for the total amount of money t kent has invested after one year.
(hint: each account has a + ia dollars, where a is the original amount in the account and i is its interest rate.)
c. if kent put $500 in the bond account, how much money does he have in his retirement plan after one year?