Math
posted by Richard .
Media service charges $20 for a phone and $30/month for its economy plan. The equation c=30t +20 describes the total cost,c, of operating Media Services phone for t months.
A) The total cost for 8 months of service is? My answer $260
If a customer has only $90 available, how many months of service can she receive? My answer is B
A. 2 1/2
B. 2 1/3
c. 3
d. 2
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