<p>Estimate the energy savings (in J/y) if all the people ([mathjaxinline]3\times 10^8[/mathjaxinline]) in the U. S. switched from U. S. code to low-flow shower heads.</p>
<p style="display:inline">Energy saved = </p>
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<numericalresponse inline="1" answer="0.52">
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<question>
<responseparam type="tolerance" default="0.02"/>
<p><strong>Example Numerical Problem</strong></p>
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<p>Estimate the energy savings (in J/y) if all the people ([mathjaxinline]3\times 10^8[/mathjaxinline]) in the U. S. switched from U. S. code to low-flow shower heads.</p>