A manufactures of a well-known brand of toothpaste is considering changing the way he prices his tooth paste. Currently, he is selling it at $5.00 per bottle. He hired a college professor of economics to estimate the demand function for the product. The demand function estimated by the professor is given below:
Qd = 3 - 0.25P
Where P represents the price per bottle.
Is the manufacturer maximizing his sales revenue by charging $5.00 for each bottle? If your answer is no, how much should he charge in order to maximize his sales revenue?