Coffee and tea are substitutes in consumption. If there is an increase in the price of coffee, assuming a positively sloped supply curve and a negatively sloped demand curve, total surplus in the tea market: a. may change, but we cannot determine the change without more information. b. will decrease. c. will increase. d. will not change.

Select the correct answers. mila is at a flea market. she has $50 in her wallet. she decides that she will spend $15 on jewelry, $20 on a pair of jeans, $5 on a t-shirt, and $10 on something to eat. she likes a one-of-a-kind t-shirt, but the seller is not ready to sell it for less than $8. she thinks of five ways to deal with this situation. which two choices indicate a trade-off?

Onsider the following subscription behavior information from genie, a web site that provides tools for constructing a family tree (ancestor search). subscriptions cost $9.99 per month, but you are charged for the entire year at the time of purchase. there is a one-year minimum term when you sign up for the service. once purchased, subscriptions are set to renew automatically unless the subscriber cancels them. when a membership renews, it renews for a one-year term and again you are charged for the entire year. there are no variable costs associated with providing this service to an individual customer, but genie does engage in customer relationship activities that they believe will increase customer retention. these customer relationship activities cost genie about $10 per year per customer. based on a sample of 1000 customers that joined genie five years ago, near the time when the company was founded, they were able to determine how many of those customers remained subscribers in the second year, third year etc. based on this information, genie calculated the average annual retention rate to be 20%. genie uses an annual discount rate of 8%. a. last year, genie spent $10,000 placing advertisements on google. genie management believes that these advertisements were responsible for about 300 new subscribers. would you recommend to genie management that they purchase more google ads? b. suppose a newly-introduced loyalty program increases the number of customers that remained to 30%. does this new data change your answer to 9.a? c. do you have any hesitations or concerns about making recommendations to management based on your above estimate of customer lifetime value?

Increases in output and increases in the inflation rate have been linked to