Question

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 a day, where x is the number of hours that hours that Jason works that day.

Answer 1

Your answer would be 30=x × 40

Answer 2

$\\ \text{Let the Jason works for x hours in a day}.\\ \text{and he makes 30 dollars an hour.}\\ \\ \text{so the total earning on working for x hours is}=30(x)=30x\\ \\ \text{Now given that he spends 40 dollars a day on transportation and food}\\ \\ \text{so to find the expression that describes his spending and earning for }\\ \text{a day, we subtract the expenses from the earning for that day.}\\ \\ \text{so the expression that describes the spending and earning a day is}$

=30x-40