This question may seem challenging since it mentions tax, but it's really just asking what 7.5% of $110 would be, which would be the tax.
7.5% can be converted to the decimal 0.075.
0.075 • 110 = 8.25
This means the tax is $8.25.
If the question needs to know the final cost of the product with tax, simply add the tax to the cost, which would result in $118.25.