This is what the graph system would look like
Answer:
9ab+3a
Step-by-step explanation:
(2a+a)(3b+1)=(3a)(3b+1)
3a(3b+1)
=(3a×3b)+3a×1
=9ab+3a
135 x 0.29 = 39.15; $39.15
Hope this helps,
♥Nikki♥
Answer:
x = -(4/3)
Step-by-step explanation:

The correct answer is C. Randomizing the groups and calculating the means and difference of the means.