Solve the following systems of linear equations using Gaussian elimination.
x + 2y + 2x = -1
x + 3y + 2z = 3
x + 3y + z = 4
(?7, 4, ?1)
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Give an expression that generates all angles coterminal with the given angle. Let n represent any integer.-342°
A. -342° + n ? 90° B. -342° + 2n? C. -342° + n ? 360° D. -342° + n ? 180°
Use the fundamental identities to simplify the expression.
A. cos3? B. sec2? C. tan2? D. sin ?
State the relationship between the graphs of f(x) and g(x).f(x) = 
, g(x) = 
A. f and g are reflections of each other about the y-axis. B. g is shifted to the left 2 units relative to f, otherwise they are the same. C. f and g are reflections of each other about the x-axis. D. g is shifted to the right 2 units relative to f, otherwise they are the same.
Find the standard equation of the parabola that satisfies the given conditions. Vertex: (0, -2); focus: (0, -1)
A. y2 = 4(x + 2) B. x2 = -4(y + 2) C. (x + 2)2 = 4y D. x2 = 4(y + 2)