Here is a list of some of basic microeconomics formulas pertaining to revenues and costs of a firm. Remember when you’re using these formulas there are a variety of assumptions, namely, that the the firm is profit-maximizing (making as much money as they can.)
Here are total cost formulas, average variable, marginal cost, and more, (work out your own algebra to find alternatives):
Total Cost (TC) = (AVC + AFC) X Output (Which is Q)
Total Variable Cost (TVC) = AVC X Output
Total Fixed Cost (TFC) = TC – TVC
Marginal Cost (MC) = Change in Total Costs / Change in Output
Marginal Product (MP) = Change in Total Product / Change in Variable Factor
Marginal Revenue (MR) = Change in Total Revenue / Change in Q
Average Product (AP) = TP / Variable Factor
Total Revenue (TR) = Price X Quantity
Average Revenue (AR) = TR / Output
Total Product (TP) = AP X Variable Factor
Economic Profit = TR – TC > 0
A Loss = TR – TC < 0
Break Even Point = AR = ATC
Profit Maximizing Condition = MR = MC
Explicit Costs = Payments to non-owners of the firm for the resources they supply.