SOLUTION: Solve. When making a telephone call using a calling card, a call lasting 5 minutes cost $1.70. A call lasting 14 minutes cost $3.95. Let y be the cost of making a call lasting x

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Question 1176776: Solve.
When making a telephone call using a calling card, a call lasting 5 minutes cost $1.70. A call lasting 14 minutes cost $3.95. Let y be the cost of making a call lasting x minutes using a calling card. Write a linear equation that models the cost of a making a call lasting x minutes.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

Hi
 ($3.95 - $1.70)/9mim = $0.25
For Call > 5 min
  C = $1.70 + $0.25(x - 5)

 $1.70 + $0.25*(14-5) = 3.95 checks.  
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