Provide an appropriate response.Use the fact that tan-1 x = 
for |x| < 1 to find the series for cot-1 x.
A. 
- 
B. 
C. 
D. 
- 
Answer: A
Mathematics
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Estimate the answer from the table or graph.The graph shows the average monthly cost of a wireless phone service for the years 2005 through 2012. Estimate the average monthly cost of this wireless phone service in 2005.
A. $35 B. $40 C. $25 D. $30
Mathematics
Using the factoring method, solve for the roots of the quadratic equation.45x2 + 65x = 0
A. x = 0
B. x = 
, x = - 
C. x = 
, x = 0
D. x = - 
, x = 0
Mathematics
Identify the complex number as real or imaginary.-7
A. Real B. Imaginary
Mathematics
Find functions f and g so that f ? g = H.H(x) = 
A. f(x) = 
; g(x) = x + 1
B. f(x) = 
; g(x) = x + 1
C. f(x) = 
; g(x) = 1
D. f(x) = x + 1 ; g(x) = 
Mathematics