suppose that the city of springfield decides to regulate the company. if the city requires the monopoly to charge a normal profit price, the company will charge

The monopolist company will charge $7 and sell 90 units.

Explanation:

If the city of Springfield regulates the monopolist, it will require the company to charge a price of $7, which is the normal profit price, according to the attached diagram.  Ordinarily, the monopolist, if unregulated, may decide to increase the price it charges to $10.  At such a price, there is no market equilibrium.  But monopolists are better regulated for the market to achieve equilibrium in the market supply and demand of the goods or services.

answer; tech (a) is correct;