Julian has a smart phone data plan that costs $40 per month that includes 5 GB of data, but will charge an extra $25 per GB over the included amount. How much would Julian have to pay in a month where he used 3 GB over the limit? How much would Julian have to pay in a month where he used went over by xx GB?

that is incorrect

To calculate how much Julian would have to pay in a month where he used 3 GB over the limit:

1. Determine the data used over the limit: 3 GB.
2. Determine the cost per GB over the included amount: $25.
3. Calculate the extra cost for using 3 GB over the limit: 3 GB * $25/GB = $<<3*25=75>>75.
4. Add the extra cost to the base monthly cost: $40 + $75 = $<<40+75=115>>115.

Therefore, Julian would have to pay $115 in a month where he used 3 GB over the limit.

To calculate how much Julian would have to pay in a month where he used xx GB over the limit:

1. Determine the data used over the limit: xx GB.
2. Determine the cost per GB over the included amount: $25.
3. Calculate the extra cost for using xx GB over the limit: xx GB * $25/GB = $<<xx*25=xx25>>xx25.
4. Add the extra cost to the base monthly cost: $40 + $xx25 = $40+xx25.

Therefore, Julian would have to pay $40+xx25 in a month where he used xx GB over the limit.

To calculate how much Julian would have to pay in a month where he used 3 GB over the limit, we need to determine the extra cost for exceeding the included amount of data.

Since the smart phone data plan includes 5 GB of data, the amount Julian used over the limit would be 3 GB.

The extra cost per GB over the included amount is $25.

To calculate the extra cost, we multiply the number of GB over the limit (3) by the cost per GB ($25):

Extra cost = 3 GB * $25/GB = $75

Therefore, Julian would have to pay an extra $75 in a month where he used 3 GB over the limit.

Now, if you want to calculate how much Julian would have to pay in a month where he exceeded the limit by xx GB, you can use the same formula:

Extra cost = xx GB * $25/GB

Replace "xx" with the number of GB Julian went over the limit, and calculate the multiplication to find the total extra cost.

Clearly, the required function is

y = 40 + 25x
So plug in your number.