The sales of Laptops increased exponentially during the Covid Crisis. It was observed that membership to internet services, Zoom also increased as well. Lenovo Laptops are widely considered to be the one of the top industry leaders in sales of Laptops. It's sleek design and light-weight makes it popular among students and professional alike. Lenovo competes with other similar brands and can be classified operating under the conditions of monopolistic competition.

An economist estimates the demand function as P = 1250 - 7.5 Q, where P is in dollars and Q is in number of Lenovo Laptops sold per week. She also estimates the weekly expenses vary with output according to the following cost equation:

TC = 10,000 + 25Q - 7.5Q² + 1/3 Q³.

1.What are the firm's total revenues and total costs? Is this firm making an economic profit, economic loss or a normal profit?