Answer:
20%
Step-by-step explanation:
A pair of jeans cost $45 before the sale.
The sale is taking $9 off of the original price.
Then
$45 - 100%
$9 - x%
Write a proportion:

Cross multiply:

Hi. This is a bit lengthy so I am attaching an image that shows it worked out step by step. I hope it helps.
Take care,
Diana
The answer is c hopefully it helps you
You answer is D. Not including set-up costs, Jerry's T-shirts charges less for each T-shirt printed than Shirts Unlimited.