Jenna earns $9.75 per hour working at the mall. If Jenna worked hours last week, how much did she earn before taxes were taken out?

You could plot the amount she made based on the function f (x) = 9.75x, where x is the number of hours.

We can find this because we are multiplying the 9.75 by how many hours she worked. This will give us her total amount before taxes.