A factory has fixed costs of $1,275 per month. The cost of producing each unit of its product is $2.50. Each unit sells for $10.
 Cost: C(x) = 1275 + 2.5x
 Revenue: R(x) = 10x
 The break even for the company can be solve by equating the cost and revenue
 1275 + 2.5x = 10x
 Solving for x = 170, they have their breakeven point when they sell 170 units.