Solve the problem.A parabolic train track must pass through the points (1, 0), (0, 7), and (0, -7), where the units are kilometers. Find an equation for the train tracks in the form 
A. x = 
(y - 0)2 - 1
B. x = - 
(y - 0)2 + 1
C. x = 
(y - 0)2 + 1
D. x = 
(y - 0)2 - 1
Answer: B
Mathematics
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Match the system of inequalities with one of the graphs.x2 + y2 < 16 y ? 1
A. 
B. 
C. 
D. 
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Solve the problem.The perimeter of a rectangle is 28 cm. One side is 8 cm longer than the other side. Find the lengths of the sides.
A. 3 cm, 8 cm B. 6 cm, 14 cm C. 7 cm, 15 cm D. 3 cm, 11 cm
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Provide an appropriate response.Multiply the radicals and simplify: 7
? 5
A. 315
B. 105
C. 350
D. 35
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Identify f as being linear, quadratic, or neither. If f is quadratic, identify the leading coefficient.f(x) = -2x - 9
A. Linear B. Quadratic; -2 C. Quadratic; -9 D. Neither
Mathematics