From the beginning of 2000 to the beginning of 2007, a country consumed gasoline at a rate of about

q(t) = 2.0t + 131 billion gallons per year

(*t* is the number of years since 2000). During the same period the price of gasoline was approximately

p(t) = 1.2e^{0.11t} dollars per gallon.

Use an integral to estimate, to the nearest 10 billion dollars, the total spent on gasoline during the given period.

$____________ billion