Solve.A ball is thrown downward with an initial velocity of 28 meters per second from a cliff that is 
high. The height of the ball is given by the quadratic equation 
where h is in meters and t is the time in seconds since the ball was thrown. Find the time that the ball will be 
from the ground. Round your answer to the nearest tenth of a second.
A. 3.3 sec
B. 2.3 sec
C. 2.4 sec
D. 2.2 sec
Answer: B
Mathematics
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Solve the problem.Let angle POQ be designated ?. Angles PQR and VRQ are right angles. If ? = 31°, find the length of OU accurate to four decimal places. 
A. 1.1666 B. 0.8572 C. 1.9416 D. 0.5150
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Determine if the function is increasing or decreasing over the interval indicated.y = 4x2 ; x > 0
A. Decreasing B. Increasing
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Factor completely. If the polynomial is prime, then state this as your answer.12x2 + 17x + 6
A. (12x + 3)(x + 2) B. prime C. (4x - 3)(3x - 2) D. (4x + 3)(3x + 2)
Mathematics
Write an equation for the parabola with vertex at the origin.Through (8, 8), symmetric with respect to the y-axis
A. y = 8x2 B. y2 = 8x C. x2 = 8y D. x = -8y2
Mathematics