Suppose the demand function for bagels is modeled as: D(x)=125-10x 0x<12.5 where x is the price per bagel in dollars. The fixed cost of producing bagels is $100.50, and each bagel costs the vendor $0.85 to make. Write down a model for revenue function R(x), cost function C(x) , and the profit function P(x). Do not simplify. Write your answer in the box. Do not use abbreviations.