Solve the problem.In the following formula, y is the minimum number of hours of studying required to attain a test score of x: y = 
. How many hours of study are needed to score 82? Round to the nearest hundredth of an hour.
A. 100.82 hr
B. 24.40 hr
C. 2.44 hr
D. 4.23 hr
Answer: C
Mathematics
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Use L'Hospital's rule to find the limit.
A. 0
B. ?
C. 
D. 
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Find the angular speed of a point traveling through ? radians in time t.? = 
, t = 11 sec
A. 
radian/sec
B. 
radians/sec
C. 
radians/sec
D. 
radians/sec
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Find the exact value of the expression.
A. - 
B. -2
C. - 
D. -
Mathematics
Solve the problem.DG's Plumbing and Heating charges $50 plus $60 per hour for emergency service. Bill remembers being billed just over $400 for an emergency call. How long to the nearest hour was the plumber at Bill's house?
A. 8 hours B. 14 hours C. 6 hours D. 10 hours
Mathematics