<PRE><B>Question 315632</B>
Students in a biology class just took a final exam.
A formula for predicting the average exam grade
on a similar test t months later is S(t) = 78 - 15 LOG (t + 1)

a) Find the students’ average score when they first
took the final exam.
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Let t = 0 and solve for S(0)
S(0) = 78 - 15*log(0+1) = 78-15*log(1)= 78-15*0 = 78
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b) What would the expected average score be on a
retest after 4 months? 
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S(4) = 78-15*log(5) = 78 - 15*0.6990 = 67.52
 
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Cheers,
Stan H.
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