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.

Answer 1

The largest time interval over which the actual price per watt of a solar panel was an increasing function of time is from 2005 to 2006.

Step-by-step explanation:

In order to find the largest time interval over which the actual price per watt of a solar panel was an increasing function of time, we need to analyze the percent growth over previous years. Looking at the table, we can see that in 2005 the percent growth is 6.7, which is positive. Continuing to go through the years, we see that the percent growth is positive in 2006 as well, at 9.7. However, in 2007, the percent growth becomes negative. Therefore, the largest time interval over which the actual price per watt of a solar panel was an increasing function of time is from 2005 to 2006, a span of 2 years.

Answer 2

i think the largest time interval over which the actual price per watt of a solar panel was an increasing function of time is : 2004 to 2006

As it gives data %growth over previous year

from 2003 to 2004 it was -5.7% but from 2004 to 2005 6.7 % from 2005 to 2006 it is 97 % and from there it once again decline

hope this helps