Solve the problem.An object is propelled vertically upward from the top of a 96-foot building. The quadratic function 
models the ball's height above the ground, 
in feet, t seconds after it was thrown. How many seconds does it take until the object finally hits the ground? Round to the nearest tenth of a second if necessary.
A. 2 seconds
B. 3.5 seconds
C. 7.8 seconds
D. 0.8 seconds
Answer: C
Mathematics
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What will be an ideal response?
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A. 2 B. 5 C. 3 D. 4
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Factor by grouping.15x2 + 18x - 20x - 24
A. (3x + 4)(5x - 6) B. (15x + 4)(x - 6) C. (15x - 4)(x + 6) D. (3x - 4)(5x + 6)
Mathematics