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The vertical differei Sefween actual and predicted revenues appears to be reasonably small-This indicates that promotional costs are related to ticket revenues. Slape of regression Ine: The slope of the regression line appears to be relatively steep indicating that, on average, ficket revenues increase with spending on promotions. The slope of the regression fine appears to be almost flat indicating that, on average, ticket revenues do not vary with spending on promotions Requirement 2. Use the high-low method to compute the function felating promotional costs and revenues. (Complete all answer boxess) Requirement 3. Using (a) the regression equation and (b) the high-low equation, what is the increase in revenues for each $10,000 spent on promotional within the televant tange? Which method should Dawn use to predict the efect of promotional costs on revenues? Explain briefy (Round yout answers to the nearest whate dell ar) The increase in revenues for each 510,000 spent on promotional costs within the relivant range using fa) the regrassion 0quation is and using (b). the high.low equation is \begin{tabular}{ll} \hline Month & Ti \\ \hline April & $ \\ May \end{tabular} Ticket Revenues Promotional Costs $ 230,000$