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What is the relationship between marginal external cost, marginal social cost, and marginal private cost? a. marginal social cost equals marginal private cost plus marginal external cost. b. marginal private cost plus marginal social cost equals marginal external cost. c. marginal social cost plus marginal external cost equals marginal private cost. d. marginal external cost equals marginal private cost minus marginal social cost. marginal external cost a. is expressed in dollars, so it is not an opportunity cost b. is an opportunity cost borne by someone other than the producer c. is equal to two times the marginal private cost d. is a convenient economics concept that is not real

conquest, inc. produces a special kind of light-weight, recreational vehicle that has a unique design. it allows the company to follow a cost-plus pricing strategy. it has $9,000,000 of average assets, and the desired profit is a 10% return on assets. assume all products produced are sold. additional data are as follows: sales volume 1000 units per year; variable costs $1000 per unit; fixed costs $4,000,000 per year; using the cost-plus pricing approach, what should be the sales price per unit?

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends > a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?