same side interior angles theorem.
hope that helps^^
Answer:
You will pay $18 for a item with original price of $90 when discounted 80%. In this example, if you buy an item at $90 with 80% discount, you will pay 90 - 72 = 18 dollars.
Step-by-step explanation:
see attached picture.
Round off answer as needed.
Basic fact:
<em> a + and a - make a -</em>
6 + -3 = 3t + 6
6+-3=6-3
6-3=3
3= 3t+6
-6
-3=3t
divide by 3
-1=t
