Question

Each book in a store costs $12, and each pen costs $2. If you want to spend exactly $30, then write an equation that models this situation. Let b represent the number of books you buy, and p represent the number of pens you buy. Choose the best answer.

12p + 2b = 30

14bp = 30

not enough information

12b + 2p = 30

12p - 2b = 30

Answer 1

12b + 2p = 30

Explanation:

b - books

p - pens

Each book costs $12 and each pen is $2, so that would be 12b plus 2p because you don't know how many of each you buy. Then set that equal to 30 because that is the total amount that you spend.

12b + 2p = 30

Answer 2

12b+2p=30

Explanation:

12b+2p=30

you mulitply amount of books you buy by 12 bucks and the amount of pens you buy for 2 bucks and set it equal to 30 your maximum amount to spend