D Question 2 1 pts The real interest rate is 9%, inflation is 3%, and the marginal tax on savings is 25%. What is the after-tax real interest rate? 6% 5% 8% O 7% D Question 3 1 pts Which of the following correctly describes monetary neutrality? Changes in the money supply affect only real variables in the short-run Changes in the money supply affect only real variables in the long-run Changes in the money supply affect only nominal variables in the long-run Change in the money supply affect only nominal variables in the short-run