The price of crude oil during the period 2000-2010 can be approximated by P(t) = 60 + 18 dollars per barrel (Osts 10) in year t, where t = 0 represents 2000. Saudi Arabia's crude oil production over the same period can be approximated by Q(t) = -0.036t2 + 0.62t + 8 million barrels per day (Osts 10). + Use these models to estimate Saudi Arabia's daily oil revenue and also its rate of change in 2009. (Round your answers to the nearest $1 million.) daily oil revenue $ 234 x million rate of change in 2009 $ 22.2 x million/yr