"petrox’s marketing and sales director doesn’t think that the firm’s market is big enough for the firm to break even. in fact, she believes that the firm will be able to sell only about 150,000 units. however, she also thinks that the demand for petrox’s product is relatively inelastic (so the firm can increase the sales price without significantly decreasing the volume of product sold). assuming that the firm can sell 150,000 units, what price must it set to break even"