please help

Bramble Racers makes bicycles. It has always purchased its bicycle tires from the Crane Tires at $25 each but is currently considering making the tires in its own factory. The estimated costs per unit of making the tires are as follows: The company's fixed expenses would increase by $72,000 per year if managers decided to make the tire. (a1) Calculate total relevant cost to make or buy if the company needs 11,200 tires a year. (a2) Ignoring qualitative factors, if the company needs 11,200 tires a year, should it continue to purchase them from Balyo or begin to produce them internally