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 where it is the time in months. (a) What is the average score on the original exam? (b) What was the average score after one year? f(t)=87-4 logo (t+1), 0≤t≤24 (c) After how many months would it take for it to predict that the average dropped to 85? (Assume that the the model could continue past two years, if necessary).
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 where it is the time in months. (a) What is the average score on the original exam? (b) What was the average score after one year? f(t)=87-4 logo (t+1), 0≤t≤24 (c) After how many months would it take for it to predict that the average dropped to 85? (Assume that the the model could continue past two years, if necessary).
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter3: Multi-step Equations And Inequalities
Section3.6: Solving Multi-step Inequalities
Problem 1C
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Transcribed Image Text:) 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)=87-4 logo (t+1),
where it is the time in months.
(a) What is the average score on the original exam?
(b) What was the average score after one year?
0≤t≤24
(c) After how many months would it take for it to predict that the average dropped to 85? (Assume that the the model could continue past two years, if necessary).
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