SOLUTION: Media services charge $20 for a phone and $30 a month for its economy plan. The equation c=30+20 describes the total cost,c of operating a media service phone for 1 month. The tota

Question 540158: Media services charge $20 for a phone and $30 a month for its economy plan. The equation c=30+20 describes the total cost,c of operating a media service phone for 1 month. The total cost for 8 months of service if a customer has only $90 available, how many months of service can she service? a)2 1/2 B)2 1/3 C)3 D)2 show explanations and details.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Media services charge $20 for a phone and $30 a month for its economy plan. The equation c(x) = 30x+20 describes the total cost,c of operating a media service phone for x months. The total cost for 8 months of service if a customer has only $90 available, how many months of service can she have service?
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90 = 30x+20
70 = 30x
x = 7/3 = 2 1/3 months
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Ans: B
Cheers,
Stan H.
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a)2 1/2 B)2 1/3 C)3 D)2
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