Richie has contributed Y dollars per month to his pension plan for each of the last R years. His employer has matched P percent of each contribution. His employer uses a graded vesting formula according to the schedule below. Years Employed Vesting Percentage 0 0% 1 0% 2-8 % 9-15 C% 16-30 D% 30+ 100% Richie has decided to change jobs after R years of service where 16 R 30. a. Write an algebraic expression that represents how much he has contributed to his retirement account. b. How much of his contributions can he take with him? c. Write an algebraic expression that represents how much his employer has contributed to his retirement account. d. Write an algebraic expression that represents how much of the employer contributions Richie can take with him