Answer:
C. The meeting will be in Los Angeles California on July, 17.
Step-by-step explanation:
This doesn't use commas correctly because there should be a comma after Los Angeles because it is a location. Also, there should not be a comma after 17 because the comma goes after the date when the year is included, which it is not.
Answer:
x=4 and the solution is not extraneous
Step-by-step explanation:

This solution is not extraneous, because plugging it back in you get:

Hope this helps!
Answer:
13
Step-by-step explanation:
The perimeter is all of the sides added together. Because this is a rectangle, the length and width are the same on both sides. They gave you the length and width, so just add them:
4 + 4 + 2.5 + 2.5 = 13.
So the perimeter of the shape is 13.