Business—Profit: The Brimfield Company computes their profit function for making and selli...

Business—Profit: The Brimfield Company computes their profit function for making and selling x touch-screen ski gloves can be modeled by the function

where x represents the number of gloves sold, and P(x) represents the profit in dollars. Determine the average rate of change in profit as the number of gloves produced and sold increases from 35 to 45.