The Pear company sells pPhones. The cost to manufacture

The Pear company sells pPhones. The cost to manufacture c pPhones is 30c2 + 60000T + 19328 dollars (this includes overhead costs and production costs for each pPhone), Ifthe company sells c pPhones for the maximum price they can fetch, the revenue function will be R(c) 34T + 132000T dollars. How many pPhones should the Pear company produce and sell to maximimze profit? (Remember that profit-revenue-cost.)