Manajer cafe michigan ,gary stark menemukan bahwa permintaan untuk kopi mocha latte bergantung pada harga yang dibebankan .Didasarkan pada observasi historis gary telah mengumpulkan data berikut yang mana menunjukkan jumlah kopi ini yang terjual dengan 6 nilai yang berbeda .Harga 52,70 53,50 52,00 54,20 53,10 54,05 Jumlah yang terjual 760 510 980 250 320 480 Dengan menggunakan data ini berapa banyak kopi mocha latte yang akan diramalkan untuk terjual dusesuaikan dengan regresi linear sederhana jika harga per kap adalah 52,80?

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