Solve.The speed in feet per second of a ball dropped from a tower is given by the algebraic expression 
where t is the number of seconds since the ball was dropped. Find the speed of the ball after 4 seconds.
A. 32 ft/sec
B. 118 ft/sec
C. 4 ft/sec
D. 128 ft/sec
Answer: D
Mathematics
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A. 
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A. 35.8 B. 2.58 C. 25.8 D. 3.58
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Provide an appropriate response.In a profit-loss analysis, point where revenue equals cost.
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Simplify the complex fraction.
A. 
B. 
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D. 
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