Use a graphing calculator to solve the system.4x + y = 16 x + 3y = -7
A. {(5, -4)}
B. {(5, 4)}
C. {(3, 4)}
D. {(-5, -4)}
Answer: A
Mathematics
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Write the interval in set-builder notation and graph the set on a number line.
A. 
B. 
C. 
D. 
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Solve the problem.What is the range of the cotangent function?
A. all real numbers from -1 to 1, inclusive B. all real numbers greater than or equal to 1 or less than or equal to -1 C. all real numbers, except integral multiples of ?(180)° D. all real numbers
Mathematics
Determine whether the given inequality is quadratic.x2 + 7x ? x3 - 4
A. Yes B. No
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