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? 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.

(co 3) the times that customers spend in a book store are normally distributed with a mean of 39.5 minutes and a standard deviation of 9.4 minutes. a random sample of 25 customers has a mean of 36.1 minutes or less. would this outcome be considered unusual, so that the store should reconsider its displays? no, the probability of this outcome at 0.035, would be considered usual, so there is no problem yes, the probability of this outcome at 0.035, would be considered unusual, so the display should be redone no the probability of this outcome at 0.359 would be considered usual, so there is no problem yes, the probability of this outcome at 0.965 would be considered unusual, so the display should be redone