Write the word phrase as an algebraic expression. Use x to represent the unknown number.The product of 4 and a number
A. 4 + x
B. 
C. 4 - x
D. 4x
Answer: D
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Solve the problem.A ball is thrown upward with an initial velocity of 42 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 30 meters from the ground. Round your answer to the nearest tenth of a second.
A. 9.4 sec B. 9.5 sec C. 10.1 sec D. 10.0 sec
Solve the problem.Estimate the minimum number of subintervals needed to approximate the integral
with an error of magnitude less than 10-4 using Simpson's Rule.
A. 12 B. 16 C. 24 D. 10
Rewrite the statement so the inequality symbol points in the opposite direction.46 ? 21
A. 46 ? 21 B. 46 > 21 C. 21 ? 46 D. 21 ? 46
Write a quadratic equation having the given solutions.-2, -3
A. x2 - 5x + 6 = 0 B. x2 - 6x - 5 = 0 C. x2 + 6x - 5 = 0 D. x2 + 5x + 6 = 0