Answer:
Answer is given below with explanations.
Step-by-step explanation:

<em>HAVE A NICE DAY</em><em>!</em>
<em>THANKS FOR GIVING ME THE OPPORTUNITY</em><em> </em><em>TO ANSWER YOUR QUESTION</em><em>. </em>
1) b (think commutative and associative properties) , 2) a (think that minus a negative equals positive)
Answer:
$6 each
Step-by-step explanation:
the first 10 multiples of 3 are 3,6,9,12,15,18,21,24,27,30
3×2=6
6+6=12
I only know the answer for B. so the answer for B is 43.3