The following function models the average typing speed S, in words per minute, of a student who has been typing for t months. S(t) = 5 + 28 ln(t + 1),    0 ≤ t ≤ 16 (a) What was the student's average typing speed, to the nearest word per minute, when the student first started to type?  words/min What was the student's average typing speed, to the nearest word per minute, after 5 months?  words/min (b) Determine how long, to the nearest tenth of a month (one decimal place), it will take the student to achieve an average typing speed of 75 words per minute.  months

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