Answer:
option a
Step-by-step explanation:
12, 3x3 = 9, +3 =12-3=9+3=12
I think the answer would be 1.8
If you're talking about the second part of the question where it asks you which facts you included in your answer, you can choose any of them and it will be counted right.
Im pretty sure the answer is .52 I got this by subtracting the toatl by the sales tax and then dividing that total by how many pencils were bought : 6.70-.42=6.24, 6.24/12=54