Question

I ordered some books online for myself and friends. ​Each book costs \$ 13$13 and the store charges a flat rate for shipping of \$ 20$20. ​ ​Write an expression for the cost of buying nn books.

Answer 1

Answer: 13n + 20

Step-by-step explanation:

The cost of each book is $13. That means that if you end up buying "n" books, cost would be:

= Cost of each book * number of books

= 13 * n

= 13n

You would also get charged a flat rate for shipping of $20 which would be added to the above cost to bring a total of:

= 13n + 20