Determine what m and b represent.The cost, in dollars, of cellular phone service with Econo-phone is given by 
where x is the number of minutes used in one month.
A. 0.46 signifies the hourly phone rent, and 24.40 signifies the cost of the hardware.
B. 24.40 signifies the total phone bill, and 0.46 signifies the number of minutes used.
C. 0.46 signifies the cost per minute, and 24.40 signifies the monthly service charge.
D. 24.40 signifies the cost per minute, and 0.46 signifies the monthly service charge.
Answer: C
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