Molly traveled 5 feet to the library but then remembered she had left her bag at the edge of the corner, so she went back to grab her back and then went to the library that was only 8 more feet.
Cube = all sides same length, which equals
A*A*A = 27
Which is the same as A^3 = 27
Therefore,the cube root is +/-3, but as it is length, must be positive, so is +3
