Find all numbers for which the rational expression is not defined.
A. x = 3 and x = -3
B. x = 0
C. x = -5 and x = -7
D. x = 5 and x = 7
Answer: D
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Find the measure of the indicated angle. Figure is not drawn to scale.
Find the measure of ?x.
A. 126° B. 71° C. 66° D. 161°
Find a rectangular equation for the curve and describe the curve.x = 4 cos t, y = 4 sin t; -? ? t ? ?
A. x2 + y2 = 4; circle with radius 4 B. x2 + y2 = 16; portion of a circle with radius 4 C. x2 + y2 = 16; circle with radius 4 D. x2 + y2 = 16; ellipse
Use a calculator to approximate to three decimal places.-
A. 23 B. -23.728 C. -23.715 D. 23.743
Write the first n terms of the given arithmetic sequence (the value of n is indicated in the question).The first term is -1 + 
, and the common difference is 3; n = 3
A. -1 + 
, 3 + 
, 6 + 
B. -1 - 
, 2 + 
, 5 + 
C. -1 + 
, 2 + 
, 5 + 
D. 1 + 
, 2 + 
, 5 + 