Find the sum of the arithmetic sequence.(-6) + (-1) + 4 + 9 + ... + 39
A. 160
B. 165
C. 170
D. 330
Answer: B
Mathematics
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Solve the trigonometric equation symbolically, graphically, or numerically for 
tan2 ? - 1 = 0
A. ? = 45°, 135°, 225°, 315° B. ? = 30°, 150°, 210°, 330° C. ? = 225°, 315° D. ? = 45°, 135°
Mathematics
Find the slope of the line, if it is defined.Through (-5, -7) and (-2, -2)
A. Undefined
B. 1
C. 1
D. -9
Mathematics
Give the degree measure of ?.? = cos-1 
A. 30° B. 330° C. 45° D. 315°
Mathematics
Decide whether or not the ordered pair satisfies the system of linear equations.(4, 5);
A. Yes B. No
Mathematics