1 . 32 . Matt recently deposited $ 20, 000 in a savings account paying a guaranteed interest rate of 4 percent for the next 10 years . If Matt expects his marginal tax rate to be 20 percent for the next 10 Years , how much interest will he earn after - tax for the First Year of his investment ?" How much interest will he Earn after- tax for the second Year Of his investment if he withdraws enough cash every year to pay the tax on the interest he earns ? How much will he have in the account after 4 Years ?" How much will he have in the account after ?' years?"