It takes greg and nikki a total of 40 minutes to paint a room if they work together. If greg works alone, he takes 18 minutes longer to paint he room than nikki takes if she works alone. When x represents the number of minutes it takes nikki to paint the room working alone, the situation is represented by this equation: which value is a solution of the rational equation that must be discarded because of the context? a. X = 0 b. X = -10 c. X = -18 d. X = -72.
