Answer:
POOOOOOOOOOOOOOOOOOG
Step-by-step explanation:
Answer: 
Step-by-step explanation:

Remove all those parentheses by multiplying. Note: 2 and 2 cancel out.

Subtract 2x

Combine like terms;

Divide by -3

Rewriting it;

Answer:
B. 2, -0.5
Step-by-step explanation:
Given the equation

Rewrite it as

Graph the graph of the quadratic function 
The grapg of this function is a parabola going downwards.
This parabola intersects the x-axis at points x = -0.5 and x = 2, so the solutions of the equation are x = -0.5 and x = 2
Answer:
D. No, because group A is already the control group.