Kendra used 225 cubic feet of concrete to make her new patio. the patio is a rectangular concrete slab and measures 25 feet by 18 feet. how thick is the concrete slab?

The formula for volume is V = (L)(W)(H).  Length, width, and height are multiplied together.  In this case, height is thickness.  Since we are given the total area, length, and width, we just need to solve for the height/thickness.  Plug in the given values:

225 = (25)(18)(H)
225 = 450*H
H = 225 ÷ 450
H =  0.5

The concrete slab is 0.5 feet thick.

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute:

answer: the slope is equal -1.