Solve the system by elimination.
A. (9, -6)
B. (-7, 10)
C. (-6, 9)
D. (6, 10)
Answer: C
Mathematics
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Use the method of adding y-coordinates to graph the function.y = 4 cos x + cos 2x
A. 
B. 
C. 
D. 
Mathematics
Give the domain and range of the function.f(x) = x2 + 2
A. Domain: all real numbers; Range: [2, ?) B. Domain: [0, ?); Range: [0, ?) C. Domain: all real numbers; Range: [5, ?) D. Domain: [2, ?); Range: all real numbers
Mathematics
Find an equation for the line, in the indicated form, with the given properties. Containing the points (-8, 2) and (-7, 4); slope-intercept form
A. y - 2 = 2(x + 8) B. y = 2x + 18 C. y = mx + 18 D. y = - 2x + 18
Mathematics
Simplify the algebraic expression.4x + x
A. 4x2 B. 5 C. 5x D. 5x2
Mathematics