EcoAuto is a company that produces eco-friendly electric cars. The company has the following financial functions: - Revenue function: R(q)=300q−3q^2 where: q is the number of electric cars sold. - Expense function: E(q)=4,000+50q where: q is the number of electric cars produced. What is the profit equation P(q) for EcoAuto in terms of the quantity q of cars produced and sold?