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Mathematics 15 Online
OpenStudy (celinegirl):

PLEASE HELP

OpenStudy (celinegirl):

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?

OpenStudy (celinegirl):

Total minutes of talk time ||| Monthly cost of cell phone 0 $19.95 10 $20.45 20 $20.95 30 $21.45 40 $21.95

OpenStudy (celinegirl):

thats a graph ^^

OpenStudy (celinegirl):

The average rate of change is $0.50, meaning that for each minute of talk time, the monthly bill increases by $0.50. The average rate of change is $0.50, meaning that for every ten minutes of talk time, the bill increases by $0.50. The average rate of change is $0.05, meaning that for each minute of talk time, the monthly bill increases by $0.05. The average rate of change is $0.05, meaning that for every ten minutes of talk time, the bill increases by $0.05.

OpenStudy (celinegirl):

I think its C

OpenStudy (anonymous):

@celinegirl sorry it took so long :'( but yes its C

OpenStudy (anonymous):

im sorry :'(

OpenStudy (celinegirl):

@jameskang1015 its okay! thank you! It was right (:

OpenStudy (anonymous):

okie thats good

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