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3. Students in an English class took a final exam. They took equivalent forms of the exam at monthly intervals thereafter. The average score S(t), in percent, after t months was found to be given by S(t) = 68 − 20 log (t + 1), t ≥ 0. What was the average score when they initially took the test, t = 0? Round your answer to a whole percent, if necessary. a) Answer: What was the average score after 4 months? after 24 months? Round your answers to two decimal places After what time t was the average score 50%? Round your answers to two decimal places

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