Graph the function by hand. Use the graph to (a) find the range, (b) give the interval over which the function is increasing, and (c) give the interval over which the function is decreasing. Round approximations to two decimal places.f(x) = - 
A. (a) [-6, ?] (b) (0, 12.00) (c) (-12.00, 0)
B. (a) [-6, 0] (b) (0, 12.00) (c) (-12.00, 0)
C. (a) [-6, 0] (b) (0, 12.00) ? (-12.00, 0) (c) None
D. (a) [0, 6] (b) (-12.00, 0) (c) (0, 12.00)
Answer: B
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Provide an appropriate response.Suppose that you are solving a system of three linear equations and have evaluated D, Dx, Dy, and Dz. Under what condition does Cramer's rule not apply?
A. D = 0; and either Dx = 0, Dy = 0, or Dz = 0 B. Dx = 0, Dy = 0, or Dz = 0 C. Dx = 0 D. D = 0
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos ? = 
, 
? ? ? 2?Find cos 
.
A. 
B. - 
C. 
D. - 
Graph the function using its vertex, axis of symmetry, and intercepts.f(x) = -x2 - 2x + 8 
A. vertex (-1, -9)
intercepts (2, 0), (- 4, 0), (0, -8)
B. vertex (1, -9)
intercepts (-2, 0), (4, 0), (0, -8)
C. vertex (1, 9)
intercepts (-2, 0), (4, 0), (0, 8)
D. vertex (-1, 9)
intercepts (2, 0), (- 4, 0), (0, 8)
Solve the equation to determine whether the equation is an identity, a conditional equation, or an inconsistent equation.18x + 8(x + 1) = 26(x + 1) - 18
A. Identity
B.
| Conditional equation |
C. Inconsistent equation