p=0.007x+190 C(x)=0.000001x30.01x2+130x+70,000 (a) Find the revenue function R. R(x)= Find the profit function P. P(x)= (b) Find the marginal cost function C. C(x)= Find the marginal revenue function R. R(x)= Find the marginal profit function P. P(x)= (c) Compute the following values. (Round your answers to two decimal places.) C(1,500)=R(1,500)=P(1,500)=