URGENT

Part 14 Marks In the closed economy of ABC, economists have gathered the following data for a specific year: Economists have also determined that the investment function is as follows: I (Investment) =7,500300r where r represents the country's real interest rate, expressed as a percentage. Calculate the following variables: Public saving. (1 mark) National saving. (0.5 marks) Investmant taulibrium interest rate. 11 mark]