Scatter Diagrams and High-Low Cost Estimation to help her in determining the variable labor cost of mowing and cleaning a mile of road. The following information is available regarding current-year operations: Use the information from the high- and low-volume months to develop a cost-estimating equation for monthly labor costs. =$5,100 Monthly labor costs = +x Adjust the equation developed in requirement (b) to incorporate the effect of an anticipated 7 percent increase in wages. Monthly labor costs = + x Scatter Diagrams and High-Low Cost Estimation to help her in determining the variable labor cost of mowing and cleaning a mile of road. The following information is available regarding current-year operations: Use the information from the high- and low-volume months to develop a cost-estimating equation for monthly labor costs. =$5,100 Monthly labor costs = +x Adjust the equation developed in requirement (b) to incorporate the effect of an anticipated 7 percent increase in wages. Monthly labor costs = + x