The fish in the river are consideredrival in consumption andnonexcludable whereas the fish in the private stream arenonrival in consumption andexcludable . in other words, the fish in the river are an example ofa common resource , and the fish in the private stream are an example of . fishing in the river will likely lead to because of which of the following reasons? a. nobody will enjoy fishing because of the lack of private contributions to the maintenance of the river. b. anyone can fish in the river, and one person's fishing activity decreases the ability of someone else to fish with success. c.all fishermen will choose to fish in the river because of the limited access to the stream. d, all fishermen will choose to fish in the stream believing that there are more fish there.

John and daphne are saving for their daughter ellen's college education. ellen just turned 10 at (t = 0), and she will be entering college 8 years from now (at t = 8). college tuition and expenses at state u. are currently $14,500 a year, but they are expected to increase at a rate of 3.5% a year. ellen should graduate in 4 years--if she takes longer or wants to go to graduate school, she will be on her own. tuition and other costs will be due at the beginning of each school year (at t = 8, 9, 10, and 11).so far, john and daphne have accumulated $15,000 in their college savings account (at t = 0). their long-run financial plan is to add an additional $5,000 in each of the next 4 years (at t = 1, 2, 3, and 4). then they plan to make 3 equal annual contributions in each of the following years, t = 5, 6, and 7. they expect their investment account to earn 9%. how large must the annual payments at t = 5, 6, and 7 be to cover ellen's anticipated college costs? a. $1,965.21b. $2,068.64c. $2,177.51d. $2,292.12e. $2,412.76