Simplify.9 ? 42 - 7(9 + 6) - 
A. 2064
B. 
C. 
D. 48
Answer: D
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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 third?
A. AB B. AE C. GH D. BG E. none of these
Verify the identity.
= 
What will be an ideal response?
Solve the problem.A rectangular enclosure must have an area of at least 4800 yd2. If 280 yd of fencing is to be used, and the width cannot exceed the length, within what limits must the width of the enclosure lie?
A. 60 ? w ? 70 B. 0 ? w ? 60 C. 60 ? w ? 80 D. 70 ? w ? 80
Choose the answer that lists three solutions for the equation.-5x + y = 16
A. (0, 16), (7, -19), (8, -24) B. (0, 16), (7, 51), (8, 56) C. (6, 46), (7, 46), (8, 46) D. (6, 14), (7, 19), (8, 24)