B Custom Steel Products also makes staircase frames like those shown here. Three staircase frames One step: square made with 4 rods Two steps made with 10 rods: Two columns of adjacent squares First column contains one square. Second column contains two squares. Columns align at the bottom. Three steps made with 18 rods: Three columns of adjacent squares First column contains one square. Second column contains two squares. Third column contains three squares. Columns align at the bottom. 1. Copy and complete the table below to show the number of rods in staircase frames with different numbers of steps. CSP Staircase Frames Number of Steps 1 2 3 4 5 6 7 8 Number of Rods 4 10 18 box box box box box 2. Make a graph of the data in your table. 3. Describe the pattern of change in the number of rods as the number of steps increases. 4. How is the pattern you described shown in the table? How is it shown in the graph? 5. How many steel rods are in a staircase frame with 12 steps? Explain how you could find this number without drawing the staircase frame.