[5 marks] On Monday through to Friday, the Toronto Stock Exchange (TSE) has trading hours from 9:00 am to 5:00 pm. Suppose that, at time t, the price of a stock (in dollars) in the TSE on a day in February is given by: s(t) = 30 13+ 1' where t is in hours and time t = 9 represents 9 : 00am Determine the average price of the stock over the first 5 hours of trading. Note that in general, if f is continuous on [a, b), then the average value of f over [a, b] is given by ba ), 1 f (t ) dt