Solve the problem.Evaluate arccos 
radians.
A. 
B. 
C. 
D. 
Answer: B
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Compute the expected age ? of a British nurse in 1851. Assume that the table below shows the age distribution of nurses in Great Britain in 1851. Round your answer to nearest hundredth. Age range (yr)20-29 30-39 40-49 50-59 60-69 70-79 80+ Midpoint (x)24.5 34.5 44.5 54.5 64.5 75.5 84.5 Percent of nurses5.8% 9.8% 19.4% 29.1% 25.1% 9.1% 1.7%
A. 54.50 B. 59.50 C. 53.76 D. 53.79 E. 43.79
Find an equation of variation in which y varies inversely as x and the following is true.y = 9 when x = 
A. y = 
B. y = 
C. y = 
D. y = 3x
Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = 3(x + 1)2 - 2
A. 
B. 
C. 
D. 
Solve the problem.Find k if x = 
is a solution of the equation kx2 + x - 9 = 0.
A. k = 
B. k = 
C. k = 
D. k = 