I need help please ! :)

The equation where y is the cost in month x. This equation represents the situation.

Step-by-step explanation:

Step 1:

The service charges for the first month = $72.99,

The service charges for the second month = $101.44, and

The service charges for the third month = $129.89.

The difference between the first and the second month = $28.45.

The difference between the second and the third month = $28.45.

So for every consecutive month, the service charges increase by $28.45.

Step 2:

The service charges are always added on to the first month's charges i.e. $72.99.

So the equation to represent the situation is where x is the month in which we are calculating that months charges y.

If x = 1,

if x = 2,

If x = 3,

So the situation is represented by that formula.