# Answer on Algebra Question for alex

Question #44470

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) = 86 - 20 \log_{10}(t+1), \qquad 0\leq t\leq 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?

f(t) = 86 - 20 \log_{10}(t+1), \qquad 0\leq t\leq 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?

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