The height, width and length of the steps are identical. calculate the cubic feet of concrete needed to create the stairwell.
a) 81 cubic feet
b) 135 cubic feet
c) 162 cubic feet
d) 270 cubic feet

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system

if you're trying to figure out how much each ounce cost it would be 0.20

cents each ounce