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. 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?
explanation: They gave us 1,250, which is half of 2,500. multiplication: 1,250 = 2,500 107 = x 2 × 1,250 = 2,500 2 × 107 = 214 Therefore, the total monthly cost if the cell phone is used for 2,500 minutes is $214.