Posted by **Please, Please Help!** on Thursday, February 2, 2012 at 10:52pm.

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 ¡Ý 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:

Show your work in this space:

What was the average score after 4 months? after 24 months?

Round your answers to two decimal places.b)Answer:Show your work in this space:

After what time t was the average score 50%?Round your answe

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