The demand for a certain type of cosmetic is given by pequals420minusx, where p is the price in dollars when x units are demanded. (a) Find the revenue Upper R left parenthesis x right parenthesis that would be obtained at a price p. (Hint: RevenueequalsDemand times Price) (b) Graph the revenue function R(x). (c) Find the price that will produce maximum revenue. (d) What is the maximum revenue? Question content area bottom Part 1 (a) The revenue function that would be obtained at a price p is Upper R left parenthesis x right parenthesisequals enter your response here