Solve the Problem. -A Person Standing Close to the Edge on Top of on Top

question 142

Multiple Choice

Solve the problem.
-A person standing close to the edge on top of a 320-foot building throws a baseball vertically upward. The quadratic function s(t) = -16t2 + 64t + 320 models the ball's height above the ground, s(t) , in feet, t seconds after it was thrown. After how many seconds does the ball reach its maximum height? Round to the nearest tenth of a second if necessary.

• A) 2 seconds
• B) 6.9 seconds
• C) 384 seconds
• D) 1.5 seconds

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Definitions:

Time Pressure

The stress experienced when the amount of time available to complete a task is perceived to be insufficient.

Gossip

Informal and often unverified conversation or reports about other people, typically involving details that are not confirmed as being true.

Cooperative

Pertaining to the willingness to act together with others for a common purpose or benefit.

Selfish

Concerned excessively or exclusively with oneself, often at the expense of others.