Media Services charges $20 for a phone and $30 month for its economy plan. ?The equation c = 30t + 20 describes the total cost c of operating a Media Services phone for t months

The total cost for 7 months of service?
If a customer has only $90 available how many months of service can she receive?

Question

Media Services charges $20 for a phone and $30 month for its economy plan. ?The equation c = 30t + 20 describes the total cost c of operating a Media Services phone for t months

The total cost for 7 months of service?
If a customer has only $90 available how many months of service can she receive?

anonymous · Answer

c=30t+20
C=30(7)+20
C=210 + 20
C=230

anonymous · Answer

C=90
90=30t+20
70=30t
t=2
only two months will be available and 10 dollars would be left over

anonymous · Answer

That's $50 less per 7 months than my Metro PCS..  !!