The manager of the main laboratory facility at Urban-lealth Center is interested in being able to predict the overhead costs each month for the lab. The manager believes that total overhead varies with the number of lab tests performed but that some costs remain the same each month regardless of the number of lab tests performed. The lab manager collected the following data for the first seven months of the year EEB (Click the icon to view the data.) Use the high-low method to determine the laboratory's cost equation for total laboratory overhead. Use your results to predict total laboratory overhead if 2,900 lab tests are performed next month. Let's begin by determining the formula that is used to calculate the variable cost (slope). Variable cost (slope) Data Table Number of Lab TestsTotal Laboratory Month January. February March.... April. May. June. July Performed 2,500 2,400 3,200 3,650 3,800 1,800 1,900 Overhead Costs $26,800 $25,700 $25,900 $28,900 $28,500 $20,900 $19,600 Print Done