Homework Help: Algebra

Posted by Ruth on Wednesday, February 1, 2012 at 12:20am.

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
.
a) What was the average score when they initially took the test, t = 0?
S(t) =28 - 20 log (t+1), t>(greater than) 0

Algebra - drwls, Wednesday, February 1, 2012 at 8:27am
You say your equation is not valid for t=0. Why not?
I would assume S(0) = 28 - 20log1 = 28

Note that negative scores are possible for n>26, which seems unlikely

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