Solve the Problem $\{ x \mid 1.5 \mathrm { sec } < \mathrm { x } < 8.5 \mathrm { sec } \}$

question 266

Multiple Choice

Solve the problem.
-A ball is thrown vertically upward with an initial velocity of 160 feet per second. The distance in feet of the ball from the ground after t seconds is s = 160t - 16t2. For what interval of time is the ball more than 256 above the
Ground?

• A) \(\{ x \mid 1.5 \mathrm { sec } < \mathrm { x } < 8.5 \mathrm { sec } \}\)
• B) \(\{ x \mid 2 \sec < x < 8 \mathrm { sec } \}\)
• C) \(\{ x \mid 4.5 \mathrm { sec } < x < 5.5 \mathrm { sec } \}\)
• D) \(\{ x \mid 7 \sec < x < 13 \mathrm { sec } \}\)

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Industrial Countries

Nations with highly developed economies characterized by significant industrial activity, advanced technology, and a high standard of living.

Labor-Intensive Service Sector

A segment of the economy that relies heavily on human labor rather than machinery to provide services.

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The measure of output produced per labor hour in the manufacturing sector.

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