Business: Maximum Revenue NRG-SUP, a supplier of energy supplements for athletes, determ...

Business: Maximum Revenue NRG-SUP, a supplier of energy supplements for athletes, determines that its price function is , where p is the price (in dollars) at which exactly x boxes of supplements will be sold per day. Find the number of boxes that NRG- SUP will sell per day and the price it should charge to maximize revenue. Also find the maximum revenue.