What is the maximum volume of a pyramid that can fit inside a cube with sides that are 18 cm long?

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Solve the equation below: (x+4)/6x=1/x a. x=2 b. x=0,2 c. x=-2 d. x=0,-2