Solve the problem.The magnitudes of two stars, A and B, are 3 and 25, respectively. Compare the brightness of these stars.

A. Star A is ? 1.00 × 1011 times brighter than star B.
B. Star A is ? 6.31 × 108 times brighter than star B.
C. Star A is ? 1.00 × 1044 times brighter than star B.
D. Star B is ? 1.58 × 109 times brighter than star A.

Answer: B

Mathematics

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Sketch the graph of the quadratic function. Identify the vertex, intercepts, and the equation for the axis of symmetry.f(x) = 10 + 7x + x2

A. vertex:
x-intercepts: (2, 0) and (5, 0)
y-intercept: (0, 10)
axis of symmetry: x =

B. vertex:
x-intercepts: (-2, 0) and (-5, 0)
y-intercept: (0, 10)
axis of symmetry: x = -

C. vertex:
x-intercepts: (2, 0) and (5, 0)
y-intercept: (0, 10)
axis of symmetry: x = -

D. vertex:
x-intercepts: (-2, 0) and (-5, 0)
y-intercept: (0, 10)
axis of symmetry: x =