Students in a fifth-grade class were given an exam. During

Last updated: 7/12/2022

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) = 95-11 log10 (t + 1), 0 ≤t≤ 24 where t is the time in months. Enter your answer as a decimal, rounded to one decimal place. Do part a without a calculator, but use a calculator for parts b and c. (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?