Find all solutions to the equation.cos x = - 
(Express your answer in radians, in exact form.)
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find the rule that defines each piecewise-defined function.
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
Mathematics
Solve the inequality.(5 + 4x)2 ? -25
A. 
B. 
? 
C. (-?, ?)
D. ?
Mathematics
Simplify. Be sure to rationalize the denominator. Assume that all variables represent positive real numbers.
A. 
B. 4
C. 4
D. 
Mathematics
Change 
A. 770 
B. 7,700 
C. 77
D. 77,000
E. 770,000
Mathematics