Vocabulary

1. the date on which an obligation must be repaid
3. a receipt issued by a store or other vendor showing the amount paid.
4. the rate of increase in size per unit time
5. adding something to something else.
9. 2x2 is an example of this
11. tax on sales
12. mechanical or electronic device for calculating and recording sales transactions, and an attached drawer for storing cash.
14. a list of goods sent or services provided, with a statement of the sum due for these a bill.
15. the amount added to the cost price of goods to cover overhead and profit.

2. the result obtained by adding several quantities together and then dividing this total by the number of quantities.
3. the process or skill of taking one number or amount away from another.
6. commercial document used to request someone to supply something in return for payment and providing specifications and quantities.
7. a reduction in price.
8. money paid regularly at a particular rate for the use of money lent, or for delaying the repayment of a debt.
10. a rate, number, or amount in each hundred.
13. a deduction from the usual cost of something, typically given for prompt or advance payment or to a special category of buyers.