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 2 foot-candles, find the intensity on a screen 15 ft from the light.
A. 2 foot-candles
B. 
foot-candle
C. 1
foot-candles
D. 
foot-candle
Answer: D
Mathematics
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A. 36 B. 6 ? 3 C. 3 ? 6 D. 63
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Provide an appropriate response.When a fruit and vegetable stand marks up produce, the 
reflects that a certain amount of spoilage will occur.
Fill in the blank(s) with the appropriate word(s).
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Use a combination of rules for exponents to simplify. Write answers with only positive exponents. Assume that all variables represent nonzero real numbers.
2
A. 
B. 
C. 
D. 
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Write the expression in lowest terms.
A. 1 B. -m C. 0 D. -1
Mathematics