Solve the variation 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 feet from a light is 3 foot candles, find the intensity on a screen 20 ft from the light.
A. 
foot-candles
B. 
foot-candles
C. 1
foot-candles
D. 2 foot-candles
Answer: A
Mathematics
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Name the property that justifies the statement. All variables represent real numbers.(14 + f) + 15.7 = 14 + (f + 15.7)
A. Commutative property of addition B. Inverse property of addition C. Associative property of addition D. Distributive property of multiplication over addition
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Divide.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Find the mode or modes (if any).20, 24, 46, 24, 49, 24, 49
A. 49 B. 33.7 C. 46 D. 24
Mathematics
Find the compound amount for the deposit. Round to the nearest cent.$200 at 7% compounded quarterly for 5 years
A. $282.96 B. $218.12 C. $280.51 D. $270.00
Mathematics