The manager of the main laboratory facility at MetroFit 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: (Click the icon to view the data.) Read the requirements. ... Plot the points on the graph. (Enlarge the graph and use the point tool button displayed below to draw the graph.) Relationship of Total Laboratory Overhead Costs to Number of Lab Tests Performed Total Laboratory Overhead Costs $36,000 $34,000- $32,000- $30,000- $28,000- $26,000- $24,000- $22,000- $20,000 $18,000- $16,000 $14,000- $12,000 1,0001,7502,5003,2504,0004,750 Number of Lab Tests Performed Click to enlarge graph