Hi, Kaylasole99! :)
11.25*28%
=$3.15
11.25-3.15
=$8.10
With taxes deducted, Henry makes $8.10 an hour.
To find how many hours he needs to work to make $324, we can create an equation:
[tex]8.10x=324[/tex]
[tex]x=hours[/tex]
Solve for x.
[tex]8.10x=324[/tex]
Divide both sides by 8.10.
[tex](8.10x)/8.10=(324)/8.10[/tex]
Simplify.
[tex]x=40[/tex]
It would take Henry 40 hours in order to make $324.
Hope this helps.
-Benjamin