The number of vehicles a dealership sells varies directly with the money spent on advertising.

how many vehicles does the dealership sell for each $1000 spent on advertising?

Step-by-step explanation:

To find the exact answer, we can find the linear equation and then use it to calculate the number of vehicles sold for each $1000 spent on advertising.

First, we choose two points from the graph , this two points will be used to find the slope.

Now, we use the point-slope formula to find the linear expression:

So, we replace x=1, which represent $1000, and see what value returns for y:

Therefore, for each $1000 spent on advertising, the dealership sell 8 vehicles.

all it means is function 3