Use a calculator to find the value of the expression rounded to two decimal places.tan-1 (-2.4)
A. -22.62
B. -1.18
C. -0.39
D. -67.38
Answer: B
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Solve for the indicated variable.8k + ar = r - 5y, for r
A. r = 
B. r = 
C. r = 
D. r = 
As part of a study, 800 college football players are randomly chosen and their weights taken. The distribution of the weights is approximately normal. The average weight is 235 pounds and the standard deviation is 25 pounds.A weight of 185 pounds corresponds to a standardized value of
A. -3. B. -2. C. -1.5. D. -1. E. none of these
Solve the problem.At a ticket booth, customers arrive randomly at a rate of x per hour. The average line length is 
where 
To keep the time waiting in line reasonable, it is decided that the average line length should not exceed 10 customers. Solve the inequality 
to determine the rates x per hour at which customers can arrive before a second attendant is needed.
A. 0 ? x ? 17 B. 0 ? x ? 19 C. 0 ? x ? 20 D. 0 ? x ? 18
Give the equation of the vertical asymptote(s) of the rational function.g(x) = 
A. x = 0, x = 2, x = 7 B. x = 2, x = 7 C. x = 1, x = -2, x = -7 D. x = -2, x = -7