Respuesta :
Answer:
9.5%
Step-by-step explanation:
To find out the percentage, you do (3.99/42) * 100.
Answer:
 9.5%
Step-by-step explanation:
To find the percentage, we take the tax over the subtotal
percentage = tax/subtotal
          =3.99/42
           =.095
Multiply by 100% to change from decimal to percent form
         9.5%