cant see the full question ;/
Y=(1/5)^x would be the only equation demonstrating decay of these
58,800.
3600 divided by 9000 is 0.4
147,000 * 0.4 is 58,800
<span><span>θi</span>=<span>sin<span>−1</span></span>(μsin<span>θr</span>)
=<span>sin<span>−1</span></span>(1.33×sin46.5)
=74.7degrees</span>
