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 \(f(t) = 82 - 12 \log_{10}(t+1), \qquad 0\leq t\leq 24\) where 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?

Sloan Jun 7, 2018

#1**+1 **

Just substitute in for the value of 't' and calculate....

A t=0 and calculate.....82 - 12 log(0+1) = 82

B t= 6 and calculate....

C t = 18

ElectricPavlov Jun 7, 2018