Evaluate.
A. 15
B. 30
C. 1.308 × 1012
D. 210
Answer: A
Mathematics
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Graph the circle.x2 + y2 - 2x - 4y + 1 = 0
A. 
B. 
C. 
D. 
Mathematics
Find the domain of the square root function. Then use the domain to choose the correct graph of the function.f(x) = 
A. domain of f: [3, ?)
B. domain of f: [-3, ?)
C. domain of f: (-?, 3]
D. domain of f: (-?, -3]
Mathematics
Perform the indicated operation. Where possible, reduce the answer to its lowest terms.
+ 
A. 
B. 
C. 
D. 
Mathematics
Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 
Mathematics