Solar panels are arrays of photovoltaic cells that convert solar radiation into electricity. the table shows the annual percent change in the US price per watt of a solar panel

Year 2004 2005 2006 2007 2008
% growth
over previous yr -5.7 6.7 9.7 -3.7 3.6

Find the largest time interval over which the actual price per watt of a solar panel was an increasing function of time.

Question

Solar panels are arrays of photovoltaic cells that convert solar radiation into electricity. the table shows the annual percent change in the US price per watt of a solar panel

Year                    2004 2005 2006 2007 2008
% growth 
over previous yr  -5.7  6.7    9.7     -3.7   3.6

Find the largest time interval over which the actual price per watt of a solar panel was an increasing function of time.

anonymous · Answer

2004 to 2006
As it gives the data %growth over PREVIOUS year.
From 2003 to 2004 it was -5.7% but from 2004 to 2005 6.7% from 2005 to 2006 9.7% and after that once again decline.

anonymous · Answer

Thank you so much . but it is correct for percentage growth in the price per watt . Is it correct for Actual price per watt Also?

anonymous · Answer

I do not see the difference, so yes

anonymous · Answer

Thank You