Answer:
The amount of sales tax Joanna will pay is $3.323
Explanation:
Given:
Cost of the backpack = $37.98
Sales tax = 8.75%
To Find:
Amount of sales tax that Joanna will pay = ?
Solution:
Sales tax imposed by the government on the goods that are sold or on the services that is provided. It is collected by the seller who sells the goods
Sales tax =

On Substituting the values
Sales tax =

sales tax =

sales tax = 3.323