At a hardware store, each wooden plank costs $3.57. how much do 12 planks cost? $

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.

Line l passes through points (0,4) and (3,6) what is the slope of a line that is parallel to line l -2/3 -3/2 2/3 3/2

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.