A cable television firm presently serves 6,600 households and charges $20 per month. A marketing survey indicates that each decrease of $1 in the monthly charge will result in 660 new customers. Let R(x) denote the total monthly revenue when the monthly charge is x dollars. Find the value of x that results in maximum monthly revenue.

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The Answer of A cable television firm presently serves 6,600 households and charges $20 per month. A marketing survey indicates that each decrease of $1 in the monthly charge will result in 660 new customers. Let R(x) denote the total monthly revenue when the monthly charge is x dollars. Find the value of x that results in maximum monthly revenue.

A Cable Television Firm Presently Serves 6,600 Households and Charges