Answer:
$2
Explanation:
Each of them cost $2 because she had $22 then when she got done and bought them she had $10 left and $22 minus $10 is $12. That is $22 what she had when she started (went to and first entered the store) $10 is what she had left (went to the store and bought the six notebooks and left the store and went home) $12 is how much all 6 notebooks cost (the total cost of all 6 notebooks) So lets do $12/6 notebooks. That would go out to be $2 per notebook.