Find the approximate value of the expression with a calculator. Round your answer to three decimal places.tan-1 (-1.5121)
A. 4.128
B. -0.986
C. 2.557
D. 2.155
Answer: B
Mathematics
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Sketch the graph of the equation. Identify the vertex and the intercepts.y = -4x2 - 8x - 8
A. Vertex (-1, -4)
x-intercepts: none
y-intercept: 
B. Vertex (1, -4)
x-intercepts: none
y-intercept (0, -8)
C. Vertex: (-1, -4)
x-intercepts: none
y-intercept: (0, -8)
D. Vertex (1, -4)
x-intercepts: none
y-intercept 
Mathematics
Convert to scientific notation.6,600,000
A. 6.6 × 10-5 B. 6.6 × 10-6 C. 6.6 × 106 D. 6.6 × 105
Mathematics
Simplify the following by combining like terms.- 
x2 - 
x + 
+ 
x2 - 
x - 
A. - 
x2 - 
x - 
B. - 
x2 - 
x + 
C. - 
x6 + 
D. - 
x4 - 
x2 + 
Mathematics
Use the graph of f to sketch a graph of the inverse of f using a dashed curve.
A. 
B. 
C. 
D. 
Mathematics