e-Filing Tax Returns The Internal Revenue Service Restructuring and Reform Act (RRA) was s...

e-Filing Tax Returns The Internal Revenue Service Restructuring and Reform Act (RRA) was signed into law by President Bill Clinton in 1998. A major objective of the RRA was to promote electronic filing of tax returns. The data in the table (top, right) show the percentage of individual income tax returns filed electronically for filing years 2004–2012. Since the percentage P of returns filed electronically depends on the filing year y, and each input corresponds to exactly one output, the percentage of returns filed electronically is a function of the filing year; so P1y2 represents the percentage of returns filed electronically for filing year y.

(a) Find the average rate of change of the percentage of e-filed returns from 2004 to 2006.

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(b) Find the average rate of change of the percentage of e-filed returns from 2007 to 2009.

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(c) Find the average rate of change of the percentage of e-filed returns from 2010 to 2012.

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(d) What is happening to the average rate of change as time passes?

Source Internal Revenue Service