Answer:
The fill-in-the-blank is 7.
Step-by-step explanation:
By factoring out the greatest common factor, 7, you will get 7(x + 3).
7(x + 3) = 7x + 21
Answer:
x=4
Step-by-step explanation:

Hello!
I believe there are a total of 12 possible outcomes for this problem. Using simple math, you can just multiply 4 by 3 to get 12 possible outcomes but you can also get 12 outcomes by looking at the fact that since there are 3 plans in each of the 4 models, there are 12 ways that this could play out.
I hope this helps!
Step 1: Isolate the absolute value
Step 2: Is the number on the other side of the equation negative?
Step 3: Write two equations without absolute value bars
Step 4: Solve both equations