Q3. The demand function for a manufacturer's product is given by p = 1000 - 2, where p is the price in dollars) per unit when q units are demanded (per week) by customers. a) Find the revenue function R(q) b) Find the level of production which will maximize the manufacturer's total revenue, and determine this revenue. c) Find the x- and y-intercepts, if any, of the revenue function, and draw its graph. d) What is the break-even point of the revenue