E ( X )
The random variable X has the probability density function ( ) [ ) 0.2 0.2 0, f x e?
= over ? . Compute the following quantities.
Answer: 5
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Determine whether the graph of the equation is a circle, parabola, ellipse, or hyperbola. Sketch the graph.(x + 3)2 + (y - 2)2 = 16
A. 
B. 
C. 
D. 
Write an equivalent sentence for the statement.If it is raining, you take your hat. (Hint: Use the fact that p ? q is equivalent to 
A. It is not raining and you take your hat. B. It is not raining or you take your hat. C. It is not raining and you do not take your hat. D. If it is raining, you do not take your hat.
The graph shows sales in thousands of dollars for 1989 and 1990. Use it to answer the question. 
Which month in 2007 had the highest sales?
A. Month 12 B. Month 3 C. Month 5 D. Month 6
Solve the equation.|x| = 8
A. 8 B. 64 C. ±8 D. -8