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?


Total minutes of talk time
Monthly cost of cell phone
0
$14.95
10
$15.95
20
$16.95
30
$17.95
40
$18.95

Answer 1

The average rate of change is $1.00, meaning that for every ten minutes of talk time, the monthly bill increases by $1.00.

The average rate of change is $1.00, meaning that for each minute of talk time, the monthly bill increases by $0.10.

The average rate of change is $0.10, meaning that for every ten minutes of talk time, the bill increases by $0.10.

The average rate of change is $0.10, meaning that for each minute of talk time, the monthly bill increases by $0.10.

Answer 2

???????

Answer 3

The average rate of change is $1.00, meaning that for every ten minutes of talk time, the monthly bill increases by $1.00.

Answer 4

The average rate of change is $0.10, meaning that for each minute of talk time, the monthly bill increases by $0.10.

Answer 5

to equate with y = m x + b
you can plot the points b = y- intercept when x = 0
the slope m is the change in y/ change in x
change in cost/minutes used