Question

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? (1 point)
Total minutes of talk time Monthly cost of cell phone
0
$19.95
10
$20.45
20
$20.95
30
$21.45
$21.95
40
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.

Answer 1

for each 1 minute of talk time, the bill goes up 5¢.

I think it has to either be

--The average rate of change is $0.05, meaning that for each minute of talk time, the monthly bil increaes by $0.05

or

--The avaerage rate of change is $0.05, meaning that for every ten minutes of talk time, the bill increases by $0.05

Answer 2

• C. The average rate of change is $0.05, meaning that for each minute of talk time, the monthly bill increases by

Explanation:

Average rate of change during 40 min:

• (21.95 - 19.95)/40 =
• 2/40 =
• $0.05

This number reflects the average cost of talk for each minute

Correct answer choice C

• The average rate of change is $0.05, meaning that for each minute of talk time, the monthly bill increases by