Factor.108x3 + 4y3
A. 4(3x - y)(9x2 + y2)
B. (3x - 4y)(36x2 + 3y + y2)
C. 4(3x + y)(9x2 - 3xy + y2)
D. 4(3x - y)(9x2 + 3xy + y2)
Answer: C
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Solve the problem.The intensity I of light varies inversely with 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. 
foot-candle
B. 
foot-candle
C. 1
foot-candles
D. 2 foot-candles
Solve the problem.The medians of a triangle intersect at a point. The distance from the vertex to the point is exactly two-thirds of the distance from the vertex to the midpoint of the opposite side. Find the exact distance of that point from the vertex A(3, 4) of a triangle, given that the other two vertices are at (0, 0) and (8, 0).
A. 
B. 2
C. 
D. 
Solve.x2 + 7x - 69 = 3(x - 8)
A. -8, 6 B. -10, 5 C. -9, -5 D. -9, 5
Find the perimeter.A rectangular coal bin has a length of 
feet and a width of 
feet.
A. 8
feet
B. 16
feet
C. 8
feet
D. 16
feet