Posted by **chris** on Monday, March 18, 2013 at 12:40am.

the increasing global temperature can be modeled by I=0.1e^(0.02t) where I is the increase in global temperature in degrees Celsius since 1990 and t is the number of years since 1990.

How much warmer was it in 2000 than in 1950?

iIn what year will the temp be 4 degrees Celsius warmer than in 1990?