Imagine you are building a staircase with cubes. To build a

Last updated: 7/19/2022

Imagine you are building a staircase with cubes. To build a staircase with one step, one cube is needed. To build a staircase with two steps, three cubes are needed. To build a staircase with three steps, six cubes are needed. Continue this pattern and determine how many cubes are needed to build a staircase with 50 steps, 250 steps, and x steps.