Solve.A ball is dropped from a height of 4 m. On each upward bounce the ball returns to 
of its previous height. Find the total distance the ball travels in an upward direction before coming to rest.
A. 28 m
B. 12 m
C. 3 m
D. 15 m
Answer: B
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Solve the problem.Find the average height of the paraboloid 
above the disk 
in the 
.
A. 650
B. 
C. 625
D. 425
Find the probability.In a batch of 8,000 clock radios, 7% are defective. A sample of 10 clock radios is randomly selected without replacement from the 8,000 and tested. The entire batch will be rejected if at least one of those tested is defective. What is the probability that the entire batch will be rejected?
A. 0.100 B. 0.516 C. 0.484 D. 0.0700
Solve.While climbing down a mountain, a hiker climbed from 10,310 feet to 4900 feet in 4 hours. Express his rate of change in altitude in feet per hour as a signed number.
What will be an ideal response?
Solve the equation by factoring.15x3 + 90x2 + 120x = 0
A. {-4, -2}
B. 
C. {0, -4, -2}
D. {0, 4, 2}