exist}, add the regression line and high-low line, label the lines, and add the regression equation and Rsquare, using the same steps described above. Somewhere on the graph, answer the following question using the insert textbnx command: If you were Shima's management, would you use 1} number of trips made, or 2} number of miles driven as the best eost driver for making future cost estimates. WHY?? What helped you reach your decision