Question

Cell phone calls cost 15 cents per minute for the first 12 minutes and 9 cents per minute thereafter. Which of the following represents the amount of money needed (in dollars ) to talk for x minutes if x is greater than 12 ?

A 1.80+0.09(12-x)
B 1.80+0.09(x-12)
C 1.80+0.09x
D 1.80+0.12x

Answer 1

To calculate the amount of money needed to talk for x minutes, multiply the number of minutes (12) by the cost per minute (15 cents) for the first 12 minutes. For the remaining minutes (x - 12), multiply the number of minutes by the cost per minute (9 cents). The total amount of money needed is 1.80 + 0.09(x - 12).

Step-by-step explanation:

To calculate the amount of money needed to talk for x minutes:

For the first 12 minutes, we multiply the number of minutes (12) by the cost per minute (15 cents).

For the remaining minutes (x - 12), we multiply the number of minutes by the cost per minute (9 cents).

The total amount of money needed is 1.80 + 0.09(x - 12), so the correct answer is A.