The file CEOSAL2.RAW contains data on 177 chief executive officers and can be used to examine the effects of firm performance on
CEO salary. (i) Estimate a model relating annual salary to firm sales and market value. Make the model of the constant elasticity variety for both independent variables. Write the results out in equation form. (ii) Add profits to the model from part (i). Why can this variable not be included in logarithmic form