SOLUTION: Media services charges $20 for a phone and $30/month for a plan. The equation c=30t+20 describes the total cost, c of operating the phone and t for the months The total cost of 2

Question 249985: Media services charges $20 for a phone and $30/month for a plan. The equation c=30t+20 describes the total cost, c of operating the phone and t for the months
The total cost of 2 months service is?
and if a customer has only $90 available, how many moths service can they receive?
Help pleeese? Thanks
Found 2 solutions by richwmiller, checkley77:
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
I answered this one earlier today. Look for it.

Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
c=20+30*2=20+60=$80 for 2 months service.
20+30t<90
30t<90-20
30t<70
t=70/30
t=2.333 months can be had for $90.
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