<h3>
Answer:</h3>

<h3>
Step-by-step explanation:</h3>
We know that
, so substitute that into the equation. 
With negative powers, instead of making the result negative, you divide one by it. Mathematically speaking,
. This makes our equation: 
Finally, simplify the exponent. 
18bags
Look if 1=3 2=9 3= 18 so he uses 18 bags!
Answer:
100, 15, 24 I think that is it
Step-by-step explanation:
0.04, just divide 4 by 100