Please show steps on how to find the incremental profit

Mohave Corporation makes several varieties of beach umbrellas and accessories. It has been approached by a company called Lost Mine Industries about producing a special order for a custom umbrella called the Uitimate Shade (US). The special-order umbrellas with the Lost Mine Company logo would be distributed to participants at an upcoming convention sponsored by Lost Mine. Lost Mine offered to buy 1,500 US umbrellas at a price of $11 each. Mohave currently has the excess capacity necessary to accept the offer. The following information is related to the production of the US umbrella: Required: 1. Compute the incremental profit (or loss) from accepting the special order: 2. Should Mohave accept the special order? 3. Suppose the special order had been to purchase 2,000 umbrellas for $9.00 each. Recompute the incremental profit (or loss) from accepting the special order under this scenatio. 4. Assume Mohave is operating at full capacity. Calculate the special-order price per unit at which Mohave would be indifferent between accepting or rejecting the special order