Joe and will both work as cooks at burger palace. each prepares hamburgers at a different speed, as shown by the functions below: j(b) = 14b + 7 w(b) = 7b + 42 where b represents the number of hamburgers cooked and j(b) and w(b) represent the amount of time each cook takes in minutes. at what value of b will their cooking time be equivalent? a. b = 5 b. b = 19 c. b = 6 d. b = 12