the cost c of producing x number of calculators is given by c= 4.50x + 3000 and the revenue r from selling is 16.50x. find the number of calculators that must be sold to break even
250 calculators must be sold to break even. Subtract 4.50x on both sides of the equal sign. 4.50x + 3000 = 16.50x Then you divide by 12 on both sides. 12x = 3000 And you get 250.
