Atoy company has been marketing souvenir toys in conjunction with various professional sports teams in a number of cities. over the past few years, this experience has provided some data on the effect of advertising on sales revenue because the advertising expenditures have tended to be different in each case. although the lengths of advertising campaigns vary, the vast majority of the sales occur within the first three months, which is the time period covered in the data. see the homework template for the data. a. explore the possibility of a linear relation between advertising expenditures and three-month sales revenue. does there seem to be a strong linear relationship, based on a scatter plot and the correlation? b. build a linear model to represent the relation between advertising and revenue. what revenues would the model predict for expenditures of $2 million and $30 million? c. as an alternative to the linear model in part (b), build a non-linear model using the power function, y = axb . what revenues would the model predict for expenditures of $2 and $30 million?