Consider the data for a price-setting firm in the table below. All revenue and cost figures are in expressed in dollars.

Quantity	0	2	4	6	8	10	12	14	16	18
Total Revenue	0	200	380	540	680	800	900	980	1040	1080
Total Cost	70	140	210	280	350	420	490	560	630	700

Using the information above, answer the following questions.

The marginal revenue for the firm of selling the 10th unit of output is Answer dollars.

The marginal cost to the firm of producing the 4th unit of output is Answer dollars.

The firm will maximise profits at an output (quantity) of Answer units.

The price the firm will charge for this level of output will be Answer dollars.

Firms maximise profits at a level of output where

Answer = marginal revenue equals marginal cost

total revenue equals total cost

price equals marginal revenue

price equals marginal cost.