I need help with this question!!?

A 30% tax on 9.60 is $2.88, bringing you to $6.72 an hour. The same tax on $10.25 would be about $3.10, bringing you to $7.15. if there is no tax on what you are making now then you are better off to not take the raise but if there is a 30% tax still, then he is trying to rip you off.