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 4 
find the intensity on a screen 20 ft from the light.
A. 2 foot-candles
B. 1 
foot-candles
C. 
foot-candle
D. 
foot-candle
Answer: D
Mathematics
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Find the missing factor.(?) ? (-2x) = 18x4
A. -9x3 B. 9x2 C. 9x3 D. -9x2
Mathematics
Use the graph of the polynomial function f(x) to solve f(x) = 0.
A. -1.5, 2.5, 3.5 B. -1.5, 3.5 C. -3.5, -2.5, 1.5 D. -3.5, 1.5
Mathematics
Determine all possible rational solutions of the polynomial equation.f(x) = -2x4 + 4x3 + 5x2 + 18
A. ±1, ±2, ±3, ±6, ±9, ±18
B. ±1, ± 
, ±2, ±3, ±6, ±9, ±18
C. ±1, ±2, ± 
, ± 
, ± 
, ± 
, ± 
D. ±1, ± 
, ±2, ±3, ± 
, ±6, ±9, ± 
, ±18
Mathematics
Add.2 + (-4)
A. -2 B. 2 C. -6 D. 6
Mathematics