Identify all values for which the expression is undefined.
A. 4, -4
B. 0
C. -2, -4
D. 2, 4
Answer: D
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Sketch the indicated set. Describe the boundary of the set. Finally, state whether the set is open, closed or neither.{(x, y) : 1 < (x - 2)2 + y2 ? 3}
A. 
The boundaries are two circles, one of
radius 1 and the other of radius 3, both
centered at (2, 0). The set is neither closed or open.
B. 
The boundary is the circle of radius 3
centered at (2, 0). The interior is the
set of all points within the circle.
The set is open.
C. 
The boundary is the circle of radius 1
centered at (2, 0). The interior is the set
of all points within the circle.
The set is closed.
D. 
The boundaries are two circles, one of
radius 1 and the other of radius 3, both
centered at (2, 0). The interior is the set
of all points in between the two circles.
The set is closed.
Sketch the subset on the real number line, and state whether the inequality is bounded or unbounded. ? -2 < x< 2 ?
A. 
The interval is bounded.
B.
The interval is unbounded.
C.
The interval is unbounded.
D.
The interval is bounded.
E.
The interval is unbounded.
Convert as indicated. If necessary, round to two decimal places.1300 grams to ounces
A. 5.85 oz B. 52 oz C. 36,855 oz D. 28.6 oz
Given matrices A = 
, B = 
, and C = 
, decide if the statement is true or false.AB is a 2 × 2 matrix.
A. True B. False