Profit is always calculated as revenue minus expenses. If a company's expenses were $10 million, write an equation that expresses profit, P, (in millions of dollars) in terms of revenue, R, (in millions of dollars), Then determine the profit when revenue is $25 million. The answers are a. p = 10-r $15 million b. p = r - 10 $15 million c. p = r -10 $35 million d. p = 10 - r $35