Find all the local maxima, local minima, and saddle points of the function.
A. f(0, 0) = 8, saddle point; f(4, 4) = 520, local maximum
B. f(0, 0) = 8, test is inconclusive
C. f(4, 0) = 8, local minimum; f(0, 4) = 8, local minimum
D. f(4, 4) = 520, local maximum
Answer: B
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Graph the system of inequalities. Shade the region that represents the solution set.y? 
x + y> -3
A. 
B. 
C. 
D. 
Solve the equation.19 = 4x - 5
A. -6
B. 
C. 6
D. - 
Establish the identity.
- 
= 4 cot u csc u
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