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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Find the odds.Seven slips of paper marked with the numbers 1, 2, 3, 4, 5, 6, and 7 are placed in a box and mixed well. Two are drawn. What are the odds in favor of the sum of the numbers on the two selected slips is not 6?
A. 9 to 1 B. 19 to 1 C. 21 to 2 D. 19 to 2
The question(s) that follow refer to the problem of finding the minimum spanning tree for the weighted network shown below.
Using Kruskal's algorithm, which edge should we choose first?
A. BD B. AC C. BC D. CD E. none of these
Factor completely. If the polynomial cannot be factored, write "prime."169k2 - 36m2
A. (13k + 6m)2 B. (169k + m)(k - 36m) C. (13k + 6m)(13k - 6m) D. (13k - 6m)2
For the stated pair of functions, find a simplified expression for F(x) = (f/g)(x), and list any x-values not in the domain of F(x).f(x) = x4 - 3x2 - 28 , g(x) = x2 + 4
A. 
(x) = x2 - 7
B. 
(x) = x2 - 4
C. 
(x) = x - 7
D. 
(x) = x2 - 7 + 