Answer:

Step-by-step explanation:
You factor out the common term first.
You should get the equation below.

then you get rid of the negative inside
and will be simplified to this.

Working attached below. Hope this helps! Any questions let me know :)
Answer:
12x-6
Step-by-step explanation:
perimeter= 2l+2w
=2(x+4)+2(5x-7)
=2x+8+10x-14
=12x-6
Answer:
As outdoor temperatures increased, residents' electric bills increased.
Step-by-step explanation: