As a speeding train crosses a trestle over a deep gorge, a child drops his toy plane from the window. The path of the toy plane is modeled by 
, where y is the height above the floor of the gorge and distances are measured in feet. How far will the toy plane travel horizontally before it hits the bottom of the gorge? [Note: The toy plane does not glide; it "drops like a rock."]
A. 7.0 ft
B. 36.0 ft
C. 185 ft
D. 1295.0 ft
E. 14 ft
Answer: B
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Find the prime factorization of the composite number.1533
A. 3 × 7 × 73 B. 72 × 73 C. 32 × 73 D. 21 × 73
-15 ? 7x - 8 ? 13
A. [-1, 3)
B. [-1, 3]
C. (-1, 3)
D. (-1, 3]
New telephone lines must be installed to connect 8 cities (A, B, C, D, E, F, G, and H). Due to government regulations, the only possible connections that are allowed are shown by the edges on the network below. The numbers on the edges indicate the cost (in millions of dollars) of each possible connection. The telephone company wishes to connect the cities in the cheapest possible way.
The degree of vertex E in the minimal spanning tree is
A. 1. B. 3. C. 4. D. 2. E. all of these will be directly connected.
Find a set of parametric equations for the hyperbola.Hyperbola: Vertices: (3, 0); Vertices: (-3, 0); Foci: (5, 0) and (-5, 0)
A. x = 3 sec t, y = 5 tan t B. x = 9 sec t, y = 16 tan t C. x = 3 sec t, y = 4 tan t D. x = 4 sec t, y = 3 tan t