Which one is the record of goods on credit?

Goods are sold by cash, the customer will usually get:

Which one is the request to the supplier to reduce the total of the original invoice?

Which note is some times printed in red?

The price after the trade discount is:

Which one is allowed if the invoice is paid within a set time limit?

Which of the following is a negotiable instrument?

If a business sell some goods on credit, it will issue:

At the end of each month, a supplier usually will send:

A customer receiving goods not in satisfactory condition in respect of price or quality issues: