Arc-bot Technologies, manufacturers of six-axis, electric servo-driven robots, has experienced the cash flows below in a shipping department. Create a cash flow table & cash flow diagram. Use Excel to determine a) Number of possible rate of return values using Descartes' rule and Norstrom criterion. b) Find all possible interest rates between 0% and 100%. c) If MARR (minimum acceptable rate of return) is 7%, does this cash flow meet/exceed it