a. If money supply is equal to 30, what are the values of equilibrium interest rate and investment spending? Interest rate: 96 Investment: $ b. If money supply is equal to 60, what are the values of equilibrium interest rate and investment spending? Interest rate: 96 Investment: $ c. If money supply is equal to 50, and money demand increases by 40, draw in the money supply and new money demand curve in graph A. Plot only the endpoints of MS and M02 in graph A and position those points on the edges ofthe graphing area. d. What are the values of equilibrium interest rate and investment spending? Interest rate: 96 Investment: $