### Home > CCA2 > Chapter 2 > Lesson 2.1.3 > Problem 2-38

2-38.

Scientists can estimate the increase in carbon dioxide in the atmosphere by measuring increases in carbon emissions. In 1998 the annual carbon emission was about eight gigatons (a gigaton is a billion metric tons). Over the last several years, annual carbon emission has been increasing by about one percent. Homework Help ✎

At this rate, how much carbon was predicted to be emitted in 2010?

What multiplier will you use for something that is increasing by 1%?

Write a function,

to represent the amount of carbon emitted in any year starting with the year 2000., You can either calculate the begining amount for 2000 and let time =

*x*or

you can let the beginning amount be the same as in 1998 and let time =*x*+ 2.