K A legal firm wanted to determine the relationship between its monthly operating costs and a potential coet driver, professional hours. An excerpt from the output of a regression analysis performed using Excel showed the following information: (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. COND a. Given this output, write the legal firm's monthly cost equation. (Enter all amounts to the nearest cent XXX) The legal firm's monthly cost equation is: y x+ 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 indicates that the cost equation indicating there to a low of relationship between the potential In this case, the R-square cost driver and the advertising agency's operating costs.