Page of 2 2. (10 points) Solve for the below 2 equations 2 unknowns: -4y+7z = 11 -2y+5z =7 3. Suppose an indifference curve is written as Uo=100=F2/351/3, where F and S represent food and shelter, respectively. Uo is a given utility level fixed at 100. a.(10 points) What is the slope of the indifference curve (dF/dS)? Please simplify your answer. (Must use implicit differentiation to find the slope.) b.(5 points) At S = 16, what is the slope of the indifference curve? (Round your answer to two decimal places.) 4. A firm has a total cost function TC(Q) = 64+ 60 +302, where O is the output, and Q>0. a) (5 points) Find an expression for marginal cost