Fixed cost: $4992 Variable cost per item: $23.30 Price at which the item is sold: $27.20 Part 1 of 4 (a) Write a linear cost function that represents the cost C(x) to produce x items. The linear cost function is C(x)= Alternate Answer: Part 2 of 4 (b) Write a linear revenue function that represents the revenue R(x) for selling x items. The linear revenue function is R(x)= (b) Write a linear revenue function that represents the revenue R(x) for selling x items. The linear revenue function is R(x)= Part: 2 / 4 Part 3 of 4 (c) Write a linear profit function that represents the profit P(x) for producing and selling x items. The linear profit function is P(x)=