Solve the problem.A reflecting telescope has a mirror shaped like a paraboloid of revolution. If the distance of the vertex to the focus is 30 feet and the distance across the top of the mirror is 68 inches, how deep is the mirror in the center?
A. 
in.
B. 
in.
C. 
in.
D. 
in.
Answer: C
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Find numbers a and b, or k, so that f is continuous at every point.
A. k = 49
B. k = 7
C. k = 
D. Impossible
Solve the problem.A signal is made by placing 3 flags, one above the other, on a flag pole. If there are 8 different flags available, how many possible signals can be flown?
A. 24 B. 512 C. 336 D. 56
Subtract.-7 - 8
A. -1 B. -15 C. 15 D. 1
Find the standard deviation for the given data.The manager of a small dry cleaner employs six people. As part of their personnel file, she asked each one to record to the nearest one-tenth of a mile the distance they travel one way from home to work. The six distances are listed below: 14.3 12.3 42.0 40.2 17.2 14.7Round results to two decimal places.
A. 41.10 B. 13.77 C. 3299.42 D. 4247.75