The accompanying table lists the monthly charge, the

Chapter 3, Problem 15

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The accompanying table lists the monthly charge, the number of minutes allowed, and the charge per additional minute for three wireless phone plans. Cell Phone Monthly Number of Overtime Plan Charge Minutes Charge/Minute A $39.99 450 $0.45 B $59.99 900 $0.40 C $79.99 1350 $0.35 Let m be the number of minutes per month, 0 # m # 2500. a. Construct a piecewise function for the cost A(m) for plan A. b. Construct a piecewise function for the cost B(m) for plan B. c. Construct a piecewise function for the cost C(m) for plan C. d. Complete the following table to determine the best plan for each of the estimated number of minutes per month. Number of Cost Minutes/Month Plan A Plan B Plan C 500 800 1000

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