Simplify (x - y + 1) - (x + y - 1).
a.) 2x - 2y + 2
b.) -2y + 2
c.) o zy-2
d.) 2x + 2y

The expression 6x2 gives the surface area of a cube, and the expression x3 gives the volume of a cube, where x is the length of one side of the cube. find the surface area and the volume of a cube with a side length of 6m

Anyone know? is appreciated! will mark brainliest if correct!

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.