Acell 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?
(0-40: total minutes of talk time)
(14.95-18.95: monthly cost of cell phone)
0 $14.95
10 $15.95
20 $16.95
30 $17.95
40 $18.95
a: the average rate of change is $1.00, meaning that for every ten minutes of talk time, the monthly bill increases by $1.00.
b: the average rate of change is $1.00, meaning that for each minute of talk time, the monthly bill increases by $0.10.
c: the average rate of change is $0.10, meaning that for every ten minutes of talk time, the bill increases by $0.10.
d: the average rate of change is $0.10, meaning that for each minute of talk time, the monthly bill increases by $0.10.