R The data for the use of a certain cellar phone is represented in the table below. Let t represent time inyears, thus 2005 = year 5. Let f(t) represent users in thousands.62005tf(t) 82010 201514182020 2021 2022 2030 2035 204019 18.9 18.8A quadratic regression function for these data is given below.f(t) = -0.05t²+2t-1 where t is time in years and f(t) is users in thousands.Use a graphing calculator or desmos.com (https://help.desmos.com/hc/en-us/articles/4406972958733-Regressions) determine the following.a) Is the function a good model for the data, yes or no, explain.b) Using this model, predict the number of users (in thousands) for the year 2030.c) Using this model, predict the number of users (in thousands) for the year 2035.d) Between what years will there be zero users?e) If you were the CEO of this cellular phone company, what would you do based on this model? (There isno right or wrong answer for part e. But do take the question seriously; after all, this is an algebra ofbusiness and economics course.)f) Include your regression graph in your answer.

t 2005 2010 2015 2020 2021 2022 ft 8 14 18 19 18.9 18.8 ft=-0.05t2+2t-1 Note: We are allowed to…

Answered: The data for the use of a certain…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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