18 The point at which a company's cost equal its revenues is the break even point. C represents the 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 which C=R C=12x+36,000 and R=15x How many units must be produced and sold in order to break even