Question 2 Between 2000 and 2010, the use of opioids was exploding in the USA. We use MME (Morphine Milligram Equivalents) as a measure of doses used. It went from 91 billion doses in 2000 to a level 159% higher in 2009. Assuming a linear trend (billion of doses as a function of years t), what is the slope of the linear function of the use of opioids, in billion? Assume that t=0 in 2003. If needed, round your answer to 2 digits after the decimal point.