Answer:
a) Plan B cost more, and $6
b) Plan B cost less according to long calls
Step-by-step explanation:
As you can see that at 175 minutes used(per month) Plan A is $14 and Plan B is $20. So Plan B cost more but the difference between then is 20 - 14 = 6. For the second question: They cost the same at 250 minutes used(per month) and Plan B since the line is flat and the price is the same for all minutes
