Provide an appropriate response.Simplify: 
A. 9
B. 5
C. 3
D. 3
Answer: D
Mathematics
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Solve the problem.An observer to a rocket launch was 800 ft from the take-off position. The observer found the angle of elevation of the rocket as a function of time to be 
Therefore, the height h (in ft) of the rocket was 
Find the time rate of change of height at 
A. 240 ft/s B. 400 ft/s C. 1100 ft/s D. 6700 ft/s
Mathematics
Simplify.14 + (-69) - 27 - (-80) + (-62)
A. 60 B. -100 C. -224 D. -64
Mathematics
Write the given set in interval notation and graph the set on a number line.{x|x < -2}
A. [-2, ?)
B. (-2, ?)
C. (-?, -2]
D. (-?, -2)
Mathematics
Factor completely. If the polynomial is prime, so state.8y2 + 36y - 20
A. (8y - 4)(y + 5) B. 4(2y + 1)(y - 5) C. 4(2y - 1)(y + 5) D. prime
Mathematics