The basic plan is c = 20 + 8s ($20 initial cost + $8 each session) The trial plan is c = 12s ($12 each session)
You need to write a table to determine when the two amounts will equal each other. At month 5 we see that you will end up spending the same amount of money on each plan.
B T ------------ 1) 28 12 2) 36 24 3) 44 36 4) 52 48 5) 60 60
