anonymous
  • 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?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
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 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.
anonymous
  • anonymous
@200205650 @AnimalLover8 @xamr
AnimalLover8
  • AnimalLover8
B

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anonymous
  • anonymous
Explain? D:
anonymous
  • anonymous
It was wrong :(
welshfella
  • welshfella
rate of change = 0.50 / 10
anonymous
  • anonymous
So it would be D?
welshfella
  • welshfella
for every 10 minutes the charrge increase by 0.50
welshfella
  • welshfella
No
welshfella
  • welshfella
rate is per minute
nincompoop
  • nincompoop
try to solve for the slope :) use x = time, y = cost
nincompoop
  • nincompoop
you know, you have to check it out per 10 there is an increased of 0.50 dollars if that were the case, you have a base price y = 0.05x + 19.95
anonymous
  • anonymous
i'm so confused
AnimalLover8
  • AnimalLover8
Oh wait.... per minute? I'm sorry.

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