The following data table represents the total cost of a monthly cell phone bill as a function of the number of minutes that the phone is used each month.

Minutes :500 750 1,000 1,250 1,500
Total Monthly Cost: (in dollars) $62 $77 $92 $107 $122

The table shows that as more minutes are used each month, the total monthly cost will increase at the same rate.
Assuming that this is true, what is the total monthly cost for the cell phone if it is used for 2,500 minutes?

(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