I need help with the MR I keep getting it wrong. Also, part C.

\fChapter 12, Homework 0 10 points eEuok Print Refers nces Saved Help Instructions: Enter your answers rounded t0 we decimal places. For each segment, be sure to enter the highest price first Save 8: Ex it Subm it Check my wurk - c. Use Chapter 6's total-revenue test for price elasticity to designate the elastic and inelastic segments of your graphed demand curve. Demand is elastic from a price of 5% Demand is inelastic from a price of S to a price pf$ , 6.50 to a price of $ 3.50 _ d. In general, when marginal revenue is positive, demand is elastic v _ When marginal revenue is negative, demand is inelastic v _ e, Suppose the marginal cost of successive units Di' output is zero, What output would the profitiseeking firm produce? [Assume the firm can only produce whole units.) 7