Question: Hydroelectric power is electric power generated by the force of moving water. The table shows the annual percent change in hydroelectric power consumption by the

Hydroelectric power is electric power generated by the force of moving water. The table shows the annual percent change in hydroelectric power consumption by the US industrial sector.

Year % growth over previous yr 2009 2010 2011 2012 6.3 -4.9

(a) According to the US Department of Energy, the US industrial sector consumed about 2.65 quadrillion BTUs of hydroelectric power in 2009. Approximately how much hydroelectric power (in quadrillion BTUs) did the US consume in 2010? In 2011?

(b) Graph the points showing the annual US consumption of hydroelectric power, in quadrillion BTUs, for the years 2009 to 2014. Label the scales on the horizontal and vertical axes.

(c) According to this data, when did the largest yearly decrease, in quadrillion BTUs, in the US consumption of hydroelectric power occur? What was this decrease?

Year % growth over previous yr 2009 2010 2011 2012 6.3 -4.9 22.4 -15.5 2013 -3.0 2014 -3.4

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