Jason makes 30 dollars an hour. he spends 40 dollars a day on transportation and food. write an expression to describe his spending and earnings for the day, where x is the number of hours that jason works that day.

To solve the problem shown above, you must folllow the proccedure below:

1. The problem says that:

 - Jason makes 30 dollars an hour.

 - Jason spends 40 dollars a day on transportation and food.

 2. You have that "x" is the number of hours that Jason works that day.

 3. Therefore, you can write the following equation to represent the situation:

 30x-40

 4. As you can see, the answer for this exercise is:

 30x-40