Breakeven Analysis: Plotting graphs

Cnsider the following costs for a certain chemical product:

fixed costs: 2.045 Million/year

variable costs:

     material cost 62 cents/gallon of product
     energy cost    24 cents/gallon of product
     labor costs   16 cents/gallon of product.

Assume you only produce what you sell.

P = selling price [$/gal]

Q = sales quantity

P and Q are related: Q = 6x10^6 - 1.1X10^6P

How do I plot the fixed and total variable costs and graphically determine the breakeven point? And how do I print (fprintf) what range Q production profitable?