Rebecca is comparing two prices of peanut butter. Peanut butter A has 12 ounces and
costs $6.00. Peanut butter B has 32 ounces and
costs $18.00. Which one is a better buy?

Peanut butter A is the better buy,

Step-by-step explanation:

To compare them directly, we can find the price per ounce for each peanut butter.

Peanut butter A has 12 ounces and costs $6, thus, each ounce is

Peanut butter B has 32 ounces and costs $18, thus, each once is

Therefore, Peanut butter A is the better buy.