Use the formula (new price-old price) / old price
32-40=-8
-8/40=-20%
the percent difference is 20%
the negative means it was a markdown
We need the square and the lengths of it to help you
Answer:
See explanation
Step-by-step explanation:

By the distributive property this is equal to:

Hope this helps!
Answer:
10
Step-by-step explanation: