Solve the system of equations using substitution. Note that the system may be inconsistent or consistent with dependent equations.
A. (6, -30)
B. (-6, 29)
C. (-7, 35)
D. (-6, 30)
Answer: D
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Graph the quadratic function. Determine the vertex, find the equation of the axis of symmetry, find any x- and y-intercepts, and state the domain and range in interval notation.f(x) = -x2 - 4x - 3
A. vertex: (2, 1)
axis of symmetry: x = 2
x-intercepts: 1 and 3; y-intercept: -3
domain: (-?, ?); range: (-?, 1]
B. vertex: (-2, 1)
axis of symmetry: x = -2
x-intercepts: -1 and - 3; y-intercept: -3
domain: (-?, ?); range: (-?, 1]
C. vertex: (2, -1)
axis of symmetry: x = 2
x-intercepts: 1 and 3; y-intercept: 3
domain: (-?, ?); range: [-1, ?)
D. vertex: (-2, -1)
axis of symmetry: x = -2
x-intercepts: -1 and - 3; y-intercept: 3
domain: (-?, ?); range: [-1, ?)
Find the x- and y-intercepts of f.f(x) = (x + 1)(x - 8)(x - 1)2
A. x-intercepts: -1, 1, -8; y-intercept: -8 B. x-intercepts: -1, 1, -8; y-intercept: 8 C. x-intercepts: -1, 1, 8; y-intercept: 8 D. x-intercepts: -1, 1, 8; y-intercept: -8
Graph the solution set of the system of inequalities or indicate that the system has no solution.y > x210x + 2y ? 20
A. 
B. 
C. 
D. 
Use trigonometric identities to solve each equation in the interval [0, 2?]4 sin2 x = 4 cos x + 1
A. 
B. 
C. ?
D. 