Chapter R.1, Problem 71PE

Web conferencing has grown over the last 20 years. The amount (in millions of dollars) spent on Web conferencing from 2006 through 2010 is listed in the table. year 2006 2007 2008 2009 2010 Amount 920 1160 1380 1600 1900 a. What is the average rate of change in the amount spent on Web conferencing from 2006 to 2008? Include units. Units are required for this answer. X b. What is the average rate of change in the amount spent on Web conferencing from 2007 to 2008? Include units. c. What is the average rate of change in the amount spent on Web conferencing from 2008 to 2010? Include units. d. What is the average rate of change in the amount spent on Web conferencing from 2008 to 2009? Include units. e. Give a good approximation for the rate of change in the amount spent on Web conferencing by the end of 2008? Include units.

PS. Please show complete solution and make sure that your answer is the same at the bottom part. thank u!

Convert the given Celsius temperature to its equivalent temperature on the Fahrenheit scale. Use C = (F-32) or F = C+32, where F is the degrees in Fahrenheit and C is the degrees in Celsius. 47°C 47°C =°F (Round to the nearest tenth as needed.)