Solve.A window washer accidentally drops a bucket from the top of a 144-foot building. The height h of the bucket after t seconds is given by 
When will the bucket hit the ground?
A. 9 sec
B. 3 sec
C. -3 sec
D. 48 sec
Answer: B
Mathematics
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Find the total area of the region between the curve and the x-axis.y = 2x - x2; 0 ? x ? 2
A. 
B. 
C. 
D. 
Mathematics
Use multiplication to check the answer. If an answer is incorrect, find the correct answer.
A. Incorrect; should be 325 R2 B. Incorrect; should be 324 R3 C. Correct D. Incorrect; should be 325 R4
Mathematics
Solve the problem.A bridge is built in the shape of a parabolic arch. The bridge arch has a span of 156 feet and a maximum height of 25 feet. Find the height of the arch at 10 feet from its center.
A. 1.6 ft B. 0.1 ft C. 12.5 ft D. 24.6 ft
Mathematics
Multiply.(5k2 - 5k - 5)(k2 - 4k - 2)
A. 5k4 - 20k3 + 10k2 + 30k + 10 B. 5k4 - 20k3 + 5k2 + 30k + 10 C. 5k4 - 25k3 + 10k2 + 30k + 10 D. 5k4 - 25k3 + 5k2 + 30k + 10
Mathematics