Discover Questions

Where can I find 1-1/2 inch (inside diameter) SDR-21 PVC pipe? Which relation had a domain of 3, 5 and 8? What is lower portion of electromagnetic spectrum ? Ian has 14 boxes of paper and divides them evenly between 4 coworkers. How many whole boxes did each coworker get? 3 3.5 4 10? Im so confused in math. I am literally just stumped. I have no clue what I am doing?