12.)Regular price: $16.99 percent of discount: 55%?

What is your question?

How to do this?

How to do what? You haven't asked a question. I see information only.

Are you supposed to find the sale price?

How to find each sale price & round to the nearest cent, sorry

Do you want the discounted price? If so:

(1-.55)$16.99 = ?

yes

So how do you do it?

PsyDAG showed you how to do it.

so 55 times 16.99?, that's it?!