Solve the problem.
-The intensity of light from a light source varies inversely as the square of the distance from the source. Suppose the the intensity is 40 foot-candles at a distance of 10 feet. What will the intensity be at a distance of 23 feet? Round your answer to the tenths place.
A)7.3 foot-candles
B)7.8 foot-candles
C)7.0 foot-candles
D)7.6 foot-candles

Question

Quizplus · Accepted Answer

The Answer of Solve the problem.
-The intensity of light from a light source varies inversely as the square of the distance from the source. Suppose the the intensity is 40 foot-candles at a distance of 10 feet. What will the intensity be at a distance of 23 feet? Round your answer to the tenths place.
A)7.3 foot-candles
B)7.8 foot-candles
C)7.0 foot-candles
D)7.6 foot-candles

Solve the Problem. -The Intensity of Light from a Light Source Varies Inversely