Basics of Engineering Economy 2nd Edition by Anthony Tarquin,Leland Blank

Exercise 8

Emissions of heat-trapping carbon dioxide (CO₂) ached an all-time high of 31.6 gigatons (giga = 10 9 ) 2011, a 3.2% increase over 2010. The International Energy Agency said this further reduces the chance that the world can avoid a dangerous rise in global average temperature by 2020. ( a ) the discharge increase continues at the same 3.2% rate per year for the next 9 years, how many gigatons will be released in 2020 ( b ) at will be the total percent increase between 2011 and 2020