Use the quadratic function to determine if the function has a maximum or minimum value and then find this maximum or minimum value.f(x) = -5x2 + 5x
A. maximum at 
B. minimum at 
C. maximum at 
D. minimum at 
Answer: A
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = ex+y
A. Domain: all points in the xy-plane; range: all real numbers; level curves: lines x + y = c B. Domain: all points in the xy-plane; range: real numbers z > 0; level curves: lines x + y = c C. Domain: all points in the first quadrant of the xy-plane; range: all real numbers; level curves: lines x + y = c D. Domain: all points in the first quadrant of the xy-plane; range: real numbers z > 0; level curves: lines x + y = c
Use the table below to write the traditional Chinese numeral as a Hindu-Arabic numeral.
A. 4137 B. 417 C. 413 D. 437
Provide an appropriate response. Solve the given problem: A tank has two pipes entering it and one leaving it. Pipe 1 fills the tank in 4 minutes. Pipe 2 takes 9 minutes to fill the same tank. Pipe 3 empties the tank in 24 minutes. How much time does it take to fill the tank with all three pipes operating at the same time?
A. 0.04 min B. 3.13 min C. 2.77 min D. 3.27 min
Find the average value of the function over the given interval.f(x) = 6 - 
on [-6, 6]
A. 3
B. 6
C. 
D. 36