Find the difference.3 - (-16)
A. -13
B. 19
C. 13
D. -19
Answer: B
Mathematics
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Establish the identity.tan(? - ?) = tan ?
What will be an ideal response?
Mathematics
Provide an appropriate response.The graph of a quadratic function 
is shown in the standard viewing window, without x-axis tick marks. Which one of the following sets could possibly be the solution set for f(x) = 0?
A. {-2, -4} B. {-4, 2} C. {-2, 4} D. {2, 4}
Mathematics
Find the first partial derivatives of the function.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Use < or > for ? to write a true sentence.
? 
A. < B. >
Mathematics