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
Monthly cost of cell phone
Stacey Warren - Expert brainly.com
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I don't understand the question to be honest. Is it average rate of change or charge?
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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.
ok look at the last 2 costs 21.95 and 21.45
difference = $0.50
and difference in time is 10 minutes
Hold on - I'm not sure here. C could also be right as that is the rate per minute
sorry guy i'm not sure about this one . the average is usually the rate per unit of time which is a minute in this case.
I would go for C but i'm not absolutely sure.