(Solution Download) The point at which a company s costs equal its revenues

The point at which a company's costs equal its revenues is the break-even point. In Exercises 73-76, C represents the production cost, in dollars, of x units of a product and R represents the revenue, in dollars, from the sale of x units. Find the number of units that must be produced and sold in order to break even. That is, find the value of x for which C = R.
a. C = 14x + 350,
R = 16.5x
b. C = 8.5x + 75,
R = 10x
c. C = 15x + 12,000,
R = 18x - 6000