Assume that the following has a linear cost function for producing x items. Find the cost function, revenue function, and profit function. Fixed Cost Marginal Cost Item Sells For $2000 $10 $30 What is the cost function? c(x)= (Do not include the $ symbol in your answer.) What is the revenue function? R(x) =[] (Do not include the $ symbol in your answer.) What is the profit function? P(x)- (Simplify your answer. Do not include the $ symbol in your answer.) Enter your answer in each of the answer boxes