Given:
a.) Finn goes to the store and buys a bike for $70.
b.) The store has a sales tax rate of 8%.
To be able to determine the amount that Finn will pay, we will be using the following equation:
[tex]\text{Tax = Price of bike x }\frac{\text{ Tax rate}}{100}[/tex]We get,
[tex]\text{Tax = Price of bike x }\frac{\text{ Tax rate}}{100}[/tex][tex]\text{ = \$70 x }\frac{8}{100}[/tex][tex]\text{ = \$70 x }0.08[/tex][tex]\text{= \$5.60}[/tex]Therefore, Finn will be paying $5.60 for the sales tax of buying a $70 bike.