1)

The cost, in millions of dollars, of a 30-second television ad during an annual television event in the years 20002010 can be approximated by

C(t) = 0.12t + 1.8 million dollars (0 t 10).

(t = 0 represents 2000.) What was the average cost of an ad in the event during the given period? HINT [See Example 1.]

$ ___ million

2)

The number of new members joining MySpace each year in the period from 2004 to the middle of 2007 can be modeled by

m(t) = 10.5t² + 14t 6 million members per year (0 t 3.5),

where t is time in years since the start of 2004. What was the average number of new members joining MySpace each year from the start of 2004 to the start of 2007?

_____million members per year