"A department store in your hometown charges 9.75% tax; the stores location in your cousins hometown only charges 7.75% tax. If a shoppers pre-tax receipt is between $11.57 and $81.43, write and graph a compound inequality that describes the difference in taxes paid for the two locations (to the nearest cent)"

I just need a start on how to do this.
Tbh, I've never heard of a pre-tax reciept. We get taxed on things that we pay, but is that the same thing as a pre-tax?

Also, at which location is this tax receipt being paid at? My hometown or my cousins hometown? (both of which has two different tax percentages)