Ali can choose Plan A or Plan B for his long distance charges For each plan cost in dollars depends on minutes per month as shown below Cost in dollars 28 26 24 2282 20 18 164 144 12 10 8 6 4 2 Plan A Plan B X 0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 Minutes used per month a If Ali makes 300 minutes of long distance calls for the month which plan costs more Plan A Plan B How much more does it cost than the other plan 0 b For what number of long distance minutes do the two plans cost the same If the time spent on long distance calls is less than this amount which plan costs less X S