Solve the problem.A person standing close to the edge on top of a 304-foot building throws a baseball vertically upward. The quadratic equation 
models the ball's height above the ground, 
in feet, t seconds after it was thrown. How many seconds does it take until the ball finally hits the ground? Round to the nearest tenth of a second if necessary.
A. 6.8 seconds
B. 2 seconds
C. 2.8 seconds
D. 368 seconds
Answer: A
Mathematics
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Solve the problem.The matrices give points and rebounds for five starting players in two games. Find the matrix that gives the totals for the two games.
A. 
B. 
C. 
D. 
Mathematics
Find the sum.3 + 6 + 9 + . . . + 150
A. 3748 B. 3825 C. 7497 D. 7650
Mathematics
Find the foci of the ellipse whose equation is given.9(x - 1)2 + 36(y + 2)2 = 324
A. foci at (- 3
, -2) and (3
, -2)
B. foci at (1 + 3
, 1) and (1 - 3
, 1)
C. foci at (1 + 3
, -2) and (1 - 3
, -2)
D. foci at (-2 + 3
, 1) and (-2 - 3
, 1)
Mathematics
Solve the system by the best method. Use set notation to express the solution set.
A. no solution; ? B. {(5, -6)} C. {(4, -5)} D. {(-5, -5)}
Mathematics