Solve the problem.The position of a body moving on a coordinate line is given by  with s in meters and t in seconds. When, if ever, during the interval  does the body change direction?

A. t = 6 sec
B. no change in direction
C. t = 12 sec
D. t = 3 sec


Answer: D

Mathematics

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Solve the problem relating to the Fibonacci sequence.F25 = 75,025, F26 = 121,393Find F27.

A. F27 = 46,368 B. F27 = 242,786 C. F27 = 167,761 D. F27 = 196,418

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Find the indicated partial derivative.

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Solve the problem.From a point on a river, two boats are driven in opposite directions, one at 10 miles per hour and the other at 11 miles per hour. In how many hours will they be 84 miles apart?

A. 4 hr B. 1 hr C. 6 hr D. 5 hr

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Decide whether the pair of lines is parallel, perpendicular, or neither.3x - 2y = 12x + 3y = 20

A. parallel B. perpendicular C. neither

Mathematics