Evaluate the expression.
+ 
? 
A. 
B. 
C. - 
D. 
Answer: B
Mathematics
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Determine the phase shift of the function.y = 
sin (4x + ?)
A. ? units to the left
B. - 
units to the left
C. 
units to the right
D. 
units to the left
Mathematics
Decide whether the pair of lines is parallel, perpendicular, or neither.3x - 8y = 2 and 32x + 12y = -16
A. Parallel B. Perpendicular C. Neither
Mathematics
Solve the system by the addition method.x + y = -9x - y = 14
A. {(2.5, -11.5)} B. {(9, -11.5)} C. {(9, 2.5)} D. {(2.5, 11.5)}
Mathematics
Find the derivative.y = 5x2 - 2.1x
A. 
= 10x2 - 2.1
B. 
= 10x - 2.1
C. 
= 5x2 - 2.1
D. 
= 5x - 2.1
Mathematics