The cost pricing model is Y=A+BX (where a is fixed cost and b is variable cost).

1. cost function Y= 10Q+200.

2 Average cost function =( 10Q+200)/Q

3. Income function = p * q = 150p-2p 2

4 profit = revenue-cost =150p-2p2-10 (150-2p)-200

Simplified profit =-2p 2+ 130p- 1700.