Solve the problem.An object is propelled vertically upward from the top of a 128-foot building. The quadratic function 
models the ball's height above the ground, 
in feet, t seconds after it was thrown. After how many seconds does the object reach its maximum height? Round to the nearest tenth of a second if necessary.
A. 6.5 sec
B. 13.6 sec
C. 2 sec
D. 0.6 sec
Answer: A
Mathematics
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Express the number in decimal notation.4.14 × 10-4
A. 0.0000414 B. -414,000 C. 0.000414 D. 0.00414
Mathematics
Find a quadratic function that best fits the data. Give answers to the nearest hundredth.
A. y = 0.05x2 - 13.25x + 790.18 B. y = 0.15x2 + 38.67x + 891.67 C. y = 0.05x2 + 13.25x + 790.18 D. y = 0.15x2 - 38.67x + 891.67
Mathematics
Graph the parabola.f(x) = (x + 4)2
A. 
B. 
C. 
D. 
Mathematics
Write as a radical expression. Simplify if possible.(5x2y2)1/3
A. 
B. 
C. 
D. 35x6y6
Mathematics