Please explain,show steps and solve them super easily. I will appreciate your help. Thank you.

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Problem 2 (16 points) A clothing company spends $300,000 a year on fixed costs and $30 per item to produce jackets. The company charges $90 per jacket. (a) Find the cost and revenue as functions of the number of items sold. (b) How many jackets does the company need to sell to make a profit (break-even point)? Problem 3 (version 1) (12 points) The weekly demand and supply functions for Sports- man 5 x 7 tents are given by p=-0.1.x2 1 +50, and p=0.1.x2 + 2x + 30. respectively, where p is measured in dollars and r is measured in units of a hundred. Find the equilibrium quantity (in hundred units)