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 20 ft from the light.
A. 1
foot-candles
B. 
foot-candle
C. 2 foot-candles
D. 
foot-candle
Answer: B
Mathematics
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Use the graph of population change per year for a metro area to answer the question. 
In which year did the population of the metro area decrease the most?
A. 2005 B. 1995 C. 1997 D. 2000
Mathematics
Solve.3x = 
A. 4
B. -4
C. 
D. 
Mathematics
Provide an appropriate response.Use the method of Lagrange multipliers to determine the critical points of f(x, y, z) = x2 + 4y - z2 subject to the constraint x + 2y - 4z = 3.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the equation.
- 
= 1
A. x = 3, -1 B. x = -3, -1 C. x = 3 D. No solution
Mathematics