Solve. xy = 20x + y = -9
A. (4, -5), (5, -4)
B. (-4, -5), (-5, -4)
C. (4, 5), (5, 4)
D. (-4, 5), (-5, 4)
Answer: B
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Graph the system of inequalities.y ? 4x + 4x + y ? 1
A. 
B. 
C. 
D. 
Express the set in roster form.{x|x is a negative multiple of 4}
A. {0, -4, -8, . . .} B. {4, 8, 12, . . .} C. {-4, -16, -64, . . .} D. {-4, -8, -12, . . .}
Graph the function, showing all asymptotes (those that do not correspond to an axis) as dashed lines. List the x- and y-intercepts.f(x) = 
A. x-intercepts: (-2, 0), (0, 0), and (1, 0)
y-intercept: (0, 0)
B. x-intercepts: (-2, 0) and (1, 0)
y-intercept: 
C. x-intercepts: (-2, 0), (0, 0), and (1, 0)
y-intercept: (0, 0)
D. x-intercepts: (-2, 0), (0, 0), and (1, 0)
y-intercept: (0, 0)
Factor the trinomial.24 + 5x - x2
A. (8 - x)(3 - x) B. (8 - x)(3 + x) C. (8 + x)(3 - x) D. (x + 8)(x - 3)