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Mathematics 12 Online
OpenStudy (anonymous):

A cell phone plan has a monthly cost that is shown in the table below. What is the correct statement regarding the average rate of change during the 40-minute time of talk? Total minutes of talk time 0 10 20 30 40 Monthly cost of cell phone $14.95 $15.95 $16.95 $17.95 $18.95

OpenStudy (anonymous):

A. The average rate of change is $1.00, meaning that for every ten minutes of talk time, the monthly bill increases by $1.00. b. The average rate of change is $1.00, meaning that for each minute of talk time, the monthly bill increases by $0.10. c. The average rate of change is $0.10, meaning that for every ten minutes of talk time, the bill increases by $0.10. d. The average rate of change is $0.10, meaning that for each minute of talk time, the monthly bill increases by $0.10.

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