Find the local extrema of the function, if they exist.f(x) = 
A. Local minimum at (-3, 3)
B. Local maximum at (-3, 3)
C. No local extrema exist
D. Local minimum at (-3, 3); Local maximum at (3, -3)
Answer: A
Mathematics
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Solve.A jet plane traveling at a constant speed goes 1200 miles with the wind, then turns around and travels for 1000 miles against the wind. If the speed of the wind is 50 mph and the total flight took 4 hours, find the speed of the plane in still air.
A. 550 mph B. 525 mph C. 605 mph D. 435 mph
Mathematics
Divide.
A. 7r2 + 8r + 2
B. 7r2 - 8r - 2
C. r2 + 2r + 8
D. 7r2 + 8r + 
Mathematics
Multiply the expressions.(8a - 1)2
A. 8a2 + 1 B. 8a2 - 16a + 1 C. 64a2 - 16a + 1 D. 64a2 + 1
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Use division to express the fraction in the form quotient + 
.
A. x + 4 + 
B. x + 
C. 3x + 
D. 3x + 4 + 
Mathematics