Simplifying
12x + -8x = 12
Combine like terms: 12x + -8x = 4x
4x = 12
Solving
4x = 12
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '4'.
x = 3
Simplifying
x = 3
Sample Response: A trend line shows the relationship between the two variables in the scatterplot. It can be used to predict based on the relationship, but it cannot be expected to produce exact figures.
Answer:

Step-by-step explanation:

Graphing:
Slope intercept form y=mx+b
a is y, p is x
y=-2x+14
y=-x+9
Intercept at (5,4)
Answer:
192.
Step-by-step explanation:
Since it is length x width x height, I would do 6 x 2 first since that's easier. So, 16 x 12 is 192.