Long-Distance Plans The charges (in dollars per minute) of two long-distance telephone
Chapter 8, Problem 66(choose chapter or problem)
Long-Distance Plans The charges (in dollars per minute) of two long-distance telephone companies for in-state, stateto- state, and international calls are represented by Company A B Type of call You plan to use 120 minutes on in-state calls, 80 minutes on state-to-state calls, and 20 minutes on international calls each month. (a) Write a matrix that represents the times spent on the phone for each type of call. (b) Compute and interpret the result.
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