Students in a fifth-grade class were given an exam. During the next 2 years, the same students were retested several times. The average score was given by the model f(t)=81−10log(t+1), 0≤t≤24f(t)=81-10log(t+1), 0≤t≤24 where tt is the time in months. Round answers to 1 decimal place. (a) What is the average score on the original exam? (b) What was the average score after 8 months? (c) After how many months does the average score drop below 70? months

Students in a fifth-grade class were given an exam. During the next 2 years, the same students were retested several times. The average score was given by the model f(t)=81−10log(t+1), 0≤t≤24f(t)=81-10log(t+1), 0≤t≤24 where tt is the time in months. Round answers to 1 decimal place. (a) What is the average score on the original exam? (b) What was the average score after 8 months? (c) After how many months does the average score drop below 70? months

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter5: Exponential And Logarithmic Functions

Section: Chapter Questions

Problem 39CT: The population P (in millions) of Texas from 2001 through 2014 can be approximated by the model...

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