The perimeter of a school gym is 522 feet. the gym measures 80 feet wide. determine the length of the school. explain the answer you came up with.

Total perimeter is 522 ft. I will guess the gym is a big rectangle. 

Therefore, Perimeter of a rectangle = 2L + 2W
P= 2L+ 2W

We know 80 ft wide. so now we plug and chug the equation we came up with

P=522 ft
P=2L+ 2(80) 

522=2L+ 160

L= 181

hope that helps

B. because the 7 represents "seven times", x represents "a number", 12 represents "plus twelve", and -4 represents "minus four"