In the year 2003, a total of 7.2 million passengers took a cruise vacation. The global cruise industry has been growing at 9% per year for the last decade. Assume that this growth rate continues.

(a) Write a formula for to approximate the number, $N$, of cruise passengers (in millions) $t$ years after 2003.
$N =$ help (formulas)

(b) How many cruise passengers (in millions) are predicted in the year 2011?
$N =$ help (numbers)

(c) How many cruise passengers (in millions) were there in the year 2000?
$N =$ help (numbers)