Average Value

a: The number of new members joining Facebook each year in the period from 2005 to the middle of 2008 can be modeled by

m(t) = 12t²20t+ 10 million members per year (0t3.5),

wheretis time in years since the start of 2005.What was the average number of new members joining Facebook each year from the start of 2005 to the start of2007? ____________________million members per year

b: If you invest $25,000 at 8% interest compounded continuously, what is the average amount in your account over one year? (Round your answer to the nearest cent.)