You are the manger of a firm that sells a leading brand of alkaline batteries. A file named Q12.xls with data on the demand for your product is available on line at www.mhe.com/baye9e. Specifically, the file contains the data on the natural logarithm of your quantity sold, price, and average income of consumers in various regions around the world. Use this information to perform a log-linear regression, and then determine the likely impact of a 3% decline in global income on the overall demand for your product.