The point at which a company's profits equal zero is called the company's break-even point. let r represent a company's revenue, let c represent the company's costs, and let x represent the number of units produced and sold each day.
r(x)=12x
c(x)=6.5x+22000
a) find the firm's break-even point; that is, find x so that r=c
b) find the values of x such that r(x)> c(x). this represents the number of units that the company must sell to earn a profit.