Answer
a. The AirTran revenue decreased \$ 89.7 million between the second quarter of 2008 and the second quarter of 2009.
b. The AirTran revenue decreased 12.9% between the second quarter of 2008 and the second quarter of 2009.
c. The AirTran revenue decreased \$89.7 million per year between the second quarter of 2008 and the second quarter of 2009.
Work Step by Step
1. Calculate the change:
$ new - old = 603.7 - 693.4 = -\$ 89.7$ million
2. Find the percent change:
$\frac{change}{old}(100\%) = \frac {-89.7}{693.4}(100\%) = -12.9\%$
3. Determine the average rate of change:
- Between the second quarter of 2008 and the second quarter of 2009, there is one year.
$\frac {change}{length \space of \space interval} = \frac {-89.7 \space million}{1 \space year} =$ -\$89.7 million per year.
