Answer:
4x - 4y - 7z
Step-by-step explanation:
x - 3y + 4z + y - 2x - 8z + 5x - 2y - 3z =
(x - 2x + 5x) + (y - 3y - 2y) + (4z - 8z - 3z) =
4x + (- 4y) + (-7z) =
4x - 4y - 7z <===
Please check the picture.
Honestly I don't know congruent so congrats I can't answer sorry
The answer is -27/8= -3.375
To solve this do:
838.35/9315= 0.09.
This means the company charged $.09 for every kilowatt of electricity used.