Find the equation of the parabola determined by the given information.Focus at (4, 0), directrix x = -4
A. 16y = x2
B. y2 = 16x
C. y = 
x2
D. x = 
y2
Answer: D
Mathematics
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Find the exact value of the trigonometric expression without the use of a calculator.
A. 
B. 
C. 2
D. 
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Solve the problem.A church steeple casts a shadow 113 ft long, and at the same time a 8.0-ft post casts a shadow 7.0 ft long. How high is the steeple? Round to the nearest unit.
A. 99 ft B. 114 ft C. 8 ft D. 129 ft
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Test the equation for symmetry with respect to the x-axis, the y-axis, and the origin.y = 6x4 + 5x - 5
A. x-axis only B. no symmetry C. origin only D. x-axis, origin
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Solve the equation.log3(x + 4) = -2
A. 
B. 
C. 
D. 
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