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 
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. 384 seconds
B. 1.5 seconds
C. 2 seconds
D. 6.9 seconds
Answer: C
Mathematics
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Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = x, y = 0, x = 3, x = 5
A. 
?
B. 8?
C. 17?
D. 
?
Mathematics
Translate to a proportion.31% of 61 is what number?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Mathematics
Use the quadratic formula to find the exact solutions.3x2 - 23x - 8 = 0
A. - 
, -3
B. - 
, 8
C. - 
, 3
D. -3, 8
Mathematics
Translate the sentence to an algebraic inequality.The height of a member of the basketball team is at least 80 inches.
A. x > 80 B. x ? 80 C. x < 80 D. x ? 80
Mathematics