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Mathematics 14 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? A. The average rate of change is $1.30, meaning that for each minute of talk time, the monthly bill increases by $1.30. B. The average rate of change is $0.07, meaning that for each minute of talk time, the monthly bill increases by $0.07. C. The average rate of change is $1.30, meaning that for every ten minutes of talk time, the monthly bill increases by $1.30.

OpenStudy (anonymous):

D. The average rate of change is $0.07, meaning that for every ten minutes of talk time, the monthly bill increases by $0.07.

OpenStudy (anonymous):

its not lettting me attach the file lol hang on ima write it instead

OpenStudy (anonymous):

yeah im pretty sure that its correct

OpenStudy (anonymous):

huh?

OpenStudy (anonymous):

oh lol i didnt choose D i just put it there cuz it didnt fit in the blue box

OpenStudy (anonymous):

oh i thought that it said C

OpenStudy (anonymous):

Total minutes of talk time Monthly cost of cell phone 0 $9.95 10 $10.65 20 $11.35 30 $12.05 40 $12.75

OpenStudy (anonymous):

B

OpenStudy (anonymous):

10.65-9.95/10-0= .7/10 or .07 for each minute

OpenStudy (anonymous):

thnx :)

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