Dally oil production from Mexico national oil company, can be approximated by: \[ q(t)=0.015 t^{2}-0.1 t+5.11 \quad \text { million barrels }(8 \leqt \leq 13) \] where t is time in years since the start of 2000. At the start of 2010 the price of oil was $86 per barrel and decreasing at a rate of $19 per year. How fast was the company's (daily) oil revenue changing at that time? The daily revenue was at a rate of dollars per year. (Remember that q(t) is measured in millions of barrels, so you will need to account for this in your revenue calculations.)