Answer:
I'm here to help!
First, we need to make a proportion to find the sales tax:
(Let x= Sales tax)
[tex]\frac{100}{8.25} =\frac{75}{x} \\100x=75*8.25\\x=6.1875[/tex]
We have the sales tax!
Now we need to estimate, as you cannot have.75 of a cent...
[tex]x=about6.19[/tex]
Now to add them:
[tex]75+6.19=81.19[/tex]
There you go! The total cost is about 81.19!
Hope this helps!
P.S. Stay Safe!