Here, q is tile sales (in thousands of cases), p is tile price (per case), a is advertising expenditures (in thousands of dollars), i is disposable income per household (in thousands of dollars), and hf is household formation (in hundreds). a. fully evaluate and interpret these empirical results on an overall basis using r2 , __ r 2 , f statistic and see information. b. is quantity demanded sensitive to "own" price?

Brian has just finished college. he wants to set up a small business to make and sell fireworks. he registers his company and acquires a license from the government. he finds that most of his competitors are selling fireworks at an extremely low price. he would like to make more money, so he decides to innovate and develop better fireworks. he sells his fireworks at a higher price, and they are a huge hit with the customers. after a few years, he earns enough profit to set up a bigger fireworks factory that complies with the government’s health and safety regulations. he even starts exporting fireworks overseas. which type of economy does this scenario describe?