(Click the icon to view the regression data) a. Given this output, write the legal firm's monthly cost equation. b. Should management use this equation to predict monthly operating costs? Explain your answer. a. Given this output, write the legal firm's monthly cost equation. (Enter all amounts to the nearest cent, X.XX.) The legal firm's monthly cost equation is: y= b. Should management use this equation to predict monthly operating costs? Explain your answer. This equation to predict costs. The R-square statistic can range from a high of to a low of . In this case, the R-square indicates that the cost equation indicating ther relationship between the potential cost driver and the advertising agency's operating costs. Data table