Solve the problem.The intensity I of light varies inversely as the square of the distance D from the source. If the intensity of illumination on a screen 5 ft from a light is 3 foot-candles, find the intensity on a screen 15 ft from the light.

A.  foot-candle 
B. 1 foot-candles 
C. 2 foot-candles
D.  foot-candle


Answer: A

Mathematics

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There are more schools that offer AP Calculus than AP Statistics.

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