If B = -m +1 - 9m2 and A = m + 9, find an expression that equals 2B – 2 A
in standard form.

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

What are the exclude value of mn+3m

5x−4≥12 or 12x+5≤−4 can you with this problem