# college algebra

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The intensity I of light (in lumens) at a distance x meters below the surface is given by I = I0 k x, where I0 is the intensity at the surface and k depends on the clarity of the water. At one location in the Atlantic Ocean, I0 = 16 and k = 0.6. Find the intensity of light at a depth of 12 meters. (Round your answer to three decimal places.)
_____ Lumens

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1. Just plug in the given values and evaluate

I = 16(.6)(12)
= .....

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2. i did that and it is not working. i get 0.0348

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3. really ??

.6 is a bit more than half
so you are taking about half of 16(12) = half of 192
or appr 96

I get 115.2

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