Question

Zachary has a smartphone data plan that costs $40 per month that includes 10 GB of data, but will charge an extra $10 per GB over the included amount. Let x represent the number of GB over the limit. Write an equation that will calculate how much Zachary will pay in total in a month (T).

Answer 1

To calculate Zachary's total cost in a month based on his data usage, use the equation T = $40 + $10x, where x represents the number of GB over the included limit.

Step-by-step explanation:

To write an equation that calculates how much Zachary will pay in total in a month, we need to consider two scenarios:

1. If the number of GB used is less than or equal to the included amount of 10 GB, then there will be no extra charges and the total cost will be $40.

2. If the number of GB used is greater than 10 GB, then Zachary will be charged an extra $10 per GB over the limit. So the total cost in this case can be calculated using the equation T = $40 + $10x, where x represents the number of GB over the limit.