1. What does MPO stand for and what group serves as the MPO for Rhode Island? 2. What does the acronym, TIP, represent, and what is found in it? The rate at which the value of the dollar amount diminishes with time is called the 3. rate. We use this in our economic evaluation of transportation projects. 4.I compared the cash-flow diagram being as fundamental to cost and benefit analysis as a free-body diagram to analyzing the magnitude and directions of forces. What does the cash flow diagram show you