I need help solving question 3 about Charlie

Charlie consumes two goods, professional baseball games (B) and mystery novels (N ) The price of baseball games is PB; the price of mystery novels is PN. Charlie has an income of I to spend on these two goods. Charlie's utility lnction can be represented as U = BZN , with MU B = ZBN and MU N = B2 . 1) What is the demand curve for mystery novels? 2) What is the Engel curve for mystery novels? 3) Are mystery novels a normal good? Suppose a consumer's demand curve is given by Qd = 100 4P. 1) What is the consumer surplus if the price is P =10 ? 2) What is the increase in consumer surplus if the price falls to P = 5 ? Linda consumes two goods, X and Y . Her utility function is U = XY , with MUX =Yand MUY =X. Initially, PX =$18 and FY =$2. Linda's income is $288. Then the price of X falls to $8. (The following questions ask you to calculate a mathematical example of the income and substitution effects of a price decrease for good X .) 1) Complete the following table