PRACTICE ANOTHER The demand function for an electronics company's car stereos is D(q) = 229.2 − 18q and the supply function is S(q) = 22q + 53.2, where q is measured in thousands. (a) At what price is the market for the stereos in equilibrium? $ 150 Correct: Your answer is correct. (b) Compute the total surplus corresponding to the price from part (a). $ 3353.2 (c) What is the maximum total surplus?