Sales tax is calculated

a. based on the number of items purchased.

b. using a percentage of the price of an item.

c. before a sale discount is applied.

d. as a percentage based on federal law.

i think its A ?

Step-by-step explanation:

To calculate the sales tax that is included in a company's receipts, divide the total amount received (for the items that are subject to sales tax) by "1

The angles are adjacent because they have a common side and vertex. Basically, they are both right next to each other.

x = 28

Step-by-step explanation:

When (x + 6)° and 56° are added together, they need to equal 90° since they are both parts of a right angle.

(x + 6) + 56 = 90

x + 62 = 90

x = 28