Simplify the complex rational expression.
A. 
B. 
C. 
D. 
Answer: C
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Solve the polynomial inequality and graph the solution set on a number line. Express the solution set in interval notation.x2 + 7x ? 0
A. (-?, -7]
B. (-?, -7] ? [0, ?]
C. [0, ?]
D. [-7, 0]
Evaluate.91
A. 9 B. Not defined. C. 1 D. 0
Solve the triangle. Round lengths to the nearest tenth and angle measures to the nearest degree.
A. A = 109°, B = 32°, C = 39° B. A = 109°, B = 39°, C = 32° C. A = 39°, B = 109°, C = 32° D. A = 39°, B = 32°, C = 109°
A person standing 150 centimeters from a mirror notices that the angle of depression from his eyes to the bottom of the mirror is 14°, while the angle of elevation to the top of the mirror is 12°. Find the vertical dimension of the mirror (see the figure). Round to the nearest degree.
?
?
?
?
A. 79 cm B. 71 cm C. 68 cm D. 69 cm E. 72 cm