Solve the Problem. -The Point at Which a Company's Costs Equals Its Revenue

Multiple Choice

Solve the problem.
-The point at which a company's costs equals its revenue is the break-even. C represents cost, in dollars, of x units of a product. R represents the revenue, in dollars, for the sale of x units. Find the number of units that must be produced
And sold in order to break even.
C = 15x + 12,000
R = 18x - 6000

A) 800
B) 12,000
C) 545
D) 6000