Answer
Over the period 1993-2003, the number of articles published decreased at an average rate of $90$ articles per year, representing a decrease of $ 17.65\%$ during that period.
Work Step by Step
Using the spreadsheet we created in part (a), we see that the average rate of change over $[3,13]$ is:
$-0.09$ thousand$= -90$ articles per year,
and we calculate the percentage change of N over $[3,13]$ to be:
$-0.17647=-17.65\%$
So, over the period 1993-2003, the number of articles published decreased at an average rate of $90$ articles per year, representing a decrease of $ 17.65\%$ during that period.
