# Calculus

posted by
**Anonymous**
.

The number of online buyers in Western Europe is expected to grow steadily in the coming years. The function below for 1 t 9, gives the estimated buyers as a percent of the total population, where t is measured in years, with t = 1 corresponding to 2001.

P(t) = 27.6 + 14.1 ln(t)

(a) What was the percent of online buyers in 2001 (t = 1)?

%

How fast was it changing in 2001?

%/yr

(b) What is the percent of online buyers expected to be in 2008 (t = 8)?

%

How fast is it expected to be changing in 2008?

%/yr