equilibrium? in your city, there are currently three firms providing oil changes. for each firm, there is a fixed cost of $90 per day and a marginal cost of $12 per oil change. each firm currently maximizes its profit by providing 10 oil changes per day. a. for each firm, marginal revenue equals $ nothing. (enter your response rounded to the nearest dollar.) b. this is a long-run, monopolistically competitive equilibrium if ▼ marginal cost price marginal revenue equals $ nothing. (enter your response rounded to the nearest penny.)

Afirm plans to begin production of a new small appliance. the manager must decide whether to purchase the motors for the appliance from a vendor at $10 each or to produce them in-house. either of two processes could be used for in-house production; process a would have an annual fixed cost of $200,000 and a variable cost of $7 per unit, and process b would have an annual fixed cost of $175,000 and a variable cost of $8 per unit. determine the range of annual volume for which each of the alternatives would be best. (round your first answer to the nearest whole number. include the indifference value itself in this answer.)