You are the manager of a firm that sells its product in a monopolistically competitive market with (inverse) demand given by P = 50 − 0.5Q. Your firm's cost function is C = 40 + 5Q2. Your firm's marginal revenue is:

Gamegirl inc., has the following transactions during august. august 6 sold 76 handheld game devices for $230 each to ds unlimited on account, terms 2/10, net 60. the cost of the 76 game devices sold, was $210 each. august 10 ds unlimited returned six game devices purchased on 6th august since they were defective. august 14 received full amount due from ds unlimited. required: prepare the transactions for gamegirl, inc., assuming the company uses a perpetual inventory syste