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
Answer: B
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A. $3500 B. $4000 C. $3000 D. $5000
Describe the graph of the polar equation.r = -9 csc ?
A. Circle of radius 9 centered at origin B. Vertical line through (-9, 0) C. Horizontal line through (0, -9) D. Line through origin with slope -9
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Solve.22 is 5% of what?
A. 4400 B. 44 C. 110 D. 440