(15 pts.) Daniel wants to retire in Jerusalem. He consumes food and clothing. In Jerusalem, food costs $10 per unit and clothing costs $5 per unit. His utility function is [1(1), '3) = ? 2? , where F and C are Daniel's units of food and clothing consumption. a) What is Daniel's optimal retirement consumption bundle if he wants to have a utility of 1000? (6 pts.) b) How much does he have to spend? (3 pts.) c) How much does Daniel have to spend it he wants his utility to be U, and food and clothing cost PF and R, ? Express your answer in the form of expenditure function ?(U, PF' 13?)? (6 pts.)