Calculate the unit vector u = (cos ?)i + (sin ?)j for the given direction angle.? = 
A. 
i + 
j
B. 
i + 
j
C. 
i + 
j
D. 
i - 
j
Answer: B
Mathematics
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Find the derivative of the function.h(x) = 
3
A. h'(x) = -3 
2
B. h'(x) = 3 
2
C. h'(x) = 
D. h'(x) = 
2
Mathematics
Graph.3x - 4y = 16
A. 
B. 
C. 
D. 
Mathematics
The bar graph below shows the recorded high temperatures in Little City for the indicated months. 
In which month was the recorded temperature the highest?
A. February B. March C. January D. October
Mathematics
Determine whether the given polar coordinates represent the same point.(4, 0°), (8, 0°)
A. No B. Yes
Mathematics