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Hiroshi Sato, an owner of a sushi restaurant in San Francisco, has been following an aggressive marketing campaign to thwart the effect of rising unemployment rates on business. He used monthly data on sales ($1,000s), advertising costs ($), and the unemployment rate (%) from January 2008 to May 2009 to estimate the following sample regression equation: Sales, = 12.00 +0.02 Advertising Costs 4-1 -0.45 Unemployment Rate-1 a. Hiroshi had budgeted $600 toward advertising costs in May 2009. Make a forecast for Sales for June 2009 if the unemployment rate in May 2009 was 8.2%. (Enter your answer in dollars not in thousands.) Sales b. What will be the forecast if he raises his advertisement budget to $700? (Enter your answer in dollars not in thousands.) $ Sales c. Reevaluate the above forecasts if the unemployment rate was 8.4% in May 2009. (Enter your answers in dollars not in thousands.) Advertising Sales 600 700