The GCF of 24 and 76 is 4.
The formula of the perimeter of a rectangle is 2l+2w so look at the photo
You would multiply 6 by 3 and x by 4. You would end up getting 4x = 18 and then you simplify that to get 9/2 or 4.5.
No, her answer is not reasonable because one yard is equal to 3 feet.