SOLUTION: Students in a fifth-grade class were given an exam. During the next 2 years, the same students were retested several times. The average scores was given by the model f (t)=90-4log(

Question 1007690: Students in a fifth-grade class were given an exam. During the next 2 years, the same students were retested several times. The average scores was given by the model f (t)=90-4log(t+1), 0 <=t<=24
Where t is the time in months.
A) what is the average score on the original exam?
B) what was the average score after 6 months?
C what was the average score after 18 months?
Answer by MaxWong(38) (Show Source): You can put this solution on YOUR website!
A) Average score = f(0) = 90 - 4 log(0+1) = 90 - 4(0) = 90
B) Average score = f(6) = 90 - 4 log(6+1) = 90 - 4log7 which is about 86.6
C) Average score = f(18) = 90 - 4 log(18+1) = 90 - 4log19 which is about 84.9
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