The answer is 9.45.
How to do it:
First you have to find 20 percent of 7.50. You do .20*7.50 which equals 1.5. Then you subtract 1.5 from 7.5 which equals 6. Now you need to add the tax. Do 6*0.0575 which equals 3.45. Finally you add 3.45 to 6 which gets the answer: 9.45