Use signed numbers to solve each problem. LIGHT Sunlight is a mixture of all colors. When...

Use signed numbers to solve each problem. LIGHT Sunlight is a mixture of all colors. When sunlight passes through water, the water absorbs different colors at different rates, as shown.

a. Use a signed number to represent the depth to which red light penetrates water.

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b. Green light penetrates four times as deep as red light. How deep is this?

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c. Blue light penetrates three times as deep as orange light. How deep is this?