Acar dealership pays you 4% commission on your first $8000 in car sales and 8% commission on sales over $8000. if you made $9000 in car sales, how much is your commission?

To do this you would first calculate the 4% commission:
0.04 *8000 = 320.

And then the 8% commission:
0.08 * (9000 - 8000) = 80.

Now you add the two values together to get the answer, 320 + 80 = 400.

Your commission would be $400.

Hope this helps.