Solve.When making a telephone call using a calling card, a call lasting 4 minutes cost $1.20. A call lasting 13 minutes cost $3.00. Let y be the cost of making a call lasting x minutes using a calling card. Write a linear equation that relates the cost of a making a call, y, to the time x.
A. y = 0.2x - 10
B. y = 5x - 
C. y = -0.2x + 2
D. y = 0.2x + 0.4
Answer: D
Mathematics
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