Find the LCD for the rational expression.
, 
A. (x + 2)2
B. (x - 2)2
C. (x - 2)(x + 2)2
D. (x + 2)(x - 2)
Answer: D
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Match the vector equation with the correct graph.
r(t) = (3 - 2t)i + tj; 0 ? t ? 
A. Figure 1 B. Figure 8 C. Figure 5 D. Figure 3
Solve the problem that involves probabilities with dependent events. Two marbles are drawn without replacement from a box with 3 white, 2 green, 2 red, and 1 blue marble. Find the probability that both marbles are white.
A. 
B. 
C. 
D. 
Multiply.-3 ? 8 ? (-4)
A. 96 B. -96 C. 196 D. 86
Solve the problem.The orbit of a planet around a sun is an ellipse with the sun at one focus. The aphelion of a planet is its greatest distance from the sun, its perihelion is its shortest distance, and its mean distance is the length of the semimajor axis of the elliptical orbit. If a planet has a perihelion of 565.6 million miles and a mean distance of 568 million miles, write an equation for the orbit of the planet around the sun.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1