Scatter Diagrams and High-Low Cost Estimation help her in determining the variable labor cost of mowing ond cleaning a mile of road. The followirg intormation is awaituble regararg currertyeur toperatens: Use the intormation from the high. and low-volume months to develop a cost.estimating equation foc monthy ubor coses. Montilyiaber cout = Monthytabor cost = Adjust the equation developed in requirement (b) to incorporate the effect of an antiopated s percent incrase in waget