Why do the credit reporting agencies track data on consumers
to companies determine to give cash back rewards to their best customers

to a lender decide whether a person is a good credit risk

to provide companies with only derogatory data so that they decline your business

To help a lender decide whether a person is a good credit risk.

Cashback rewards are not the purpose of credit reports, and credit reports do NOT only provide derogatory information.

answer: in the short-run firms will respond by raising the price of turkey.

explanation: initially the long-run equilibrium is at a price of $5 per pound of turkey and a quantity of 50 million pounds per year. now, when webmd claims that a protein found in turkey will increase your expected lifespan by 4 years. the consumers demand for turkey will increase at every price shifting the demand curve to the right from d1 to d2. while, there will be no change in the supply curve in the short-run as it is not possible for producers to adjust supply so quickly. as a result the new equilibrium will occur at a higher price and a higher quantity of turkey.

thus, in the short run firms will respond by increasing the price of turkey, selling more quantity at a higher price and earning economic profits.