Graph on the number line, and express in interval notation.The set of all real numbers between -4 and 0 excluding both -4 and 0.
A. (-4, 0]
B. (-4, 0)
C. [-4, 0)
D. [-4, 0]
Answer: B
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Solve the problem.A region in the first quadrant is bounded above by the curve y = tanh x, below by the 
on the left by the 
and on the right by the line 
Find the volume of the solid generated by revolving the region about the x-axis.
A. ?
B. 2?
C. 0
D. - 
Explain the behavior of the graph of f(x) as it approaches its vertical asymptote.f(x) = 
A. Approaches ? from the left and the right B. Approaches -? from the left, approaches ? from the right C. Approaches -? from the left and the right D. Approaches ? from the left, approaches -? from the right
Add.-140 + (-280)
A. 420 B. -140 C. -420 D. 140
Solve the problem.Suppose that the unit price, p, for x units of a product can be illustrated by the given graph. Is p continuous at 
A. No; no; no B. Yes; no; yes C. No; yes; yes D. No; yes; no