The point at which a company's costs 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 for which
C = R.
C= 15x+350 and R = 17.5x.