Use a calculator to give the real number value. Round the answer to 7 decimal places.y = sin-1(-0.4848)
A. -0.5412698
B. 2.6365103
C. -0.5061345
D. -0.4888889
Answer: C
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Find the domain of the rational function.f(x) = 
A. all real numbers except ±9
B. all real numbers except ±9, 
C. all real numbers except 9
D. all real numbers except 81
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) = -11x2 - 2x - 12
A. vertex: 
axis of symmetry: x = 
x-intercept: none; y-intercept: 12
domain: (-?, ?); range: 
B. vertex: 
axis of symmetry: x = - 
x-intercept: none; y-intercept: -12
domain: (-?, ?); range: 
C. vertex: 
axis of symmetry: x = - 
x-intercept: none; y-intercept: 12
domain: (-?, ?); range: 
D. vertex: 
axis of symmetry: x = 
x-intercept: none; y-intercept: -12
domain: (-?, ?); range: 
Solve the equation using the quadratic formula.4x2 + 8x = - 1
A. 
B. 
C. 
D. 
Factor completely. If the polynomial cannot be factored, say it is prime.10x4 - 9x2 - 9
A. (2x2 + 1)(5x2 - 9) B. (10x2 - 3)(x2 + 3) C. (2x2 - 3)(5x2 + 3) D. (5x - 3)(2x + 3)