Month revenue cost 1 300 250 3 310 280 7 340 320 10 375 350 below is a table of revenue and cost, in thousands of dollars, of a business. use the best fit line to estimate the number of months until the business is no longer profitable. a) 11 b) 13 c) 18 d) 21

(6,1)(5,4)slope = (4 - 1) / (5 - 6) = 3/-1 = -3y = mx + bslope(m) = -3use either of ur , = 6 and y = 1now sub and find b, the y int1 = -3(6) + b1 = -18 + b1 + 18 = b19 = bso ur equation is : y = -3x + we need it in standard formy = -3x + 3x to both sides3x + y = 19 < == standard form