Provide an appropriate response.
Harry sights directly across the river, which is 30 feet wide. He turns and sees a post on the other side of the river, which is 12 feet downstream. What is the tangent of the angle through which he turns?
A. 
B. 87.4
C.
0.600
D.
Answer: D
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Identify the type of surface represented by the given equation. y2 + z2 = 8
A.
| Paraboloid |
B.
| Cylinder |
C.
| Ellipsoid |
D.
| Parabolic cylinder |
Solve.Beaufort Canal has a semi-elliptical cross section with a width W = 68 feet and a depth D = 13 feet (see figure). The keel on Sasha's yacht rides 5 feet below the water line at the keel's deepest point. If the yacht travels parallel to the canal, and assuming the canal is completely full of water, how close can Sasha bring the yacht's centerline to the edge of the canal without running aground? (The keel is the very bottom of a boat hull and runs directly below the boat's centerline from front to back.) Round answer to the nearest whole foot.
A. 3 ft from the edge B. 5 ft from the edge C. 4 ft from the edge D. 31 ft from the edge
Write the vector v in the form ai + bj, given its magnitude 
and the angle ? it makes with the positive x-axis.
= 13, ? = 180°
A. v = -13i B. v = -13j C. v = -13i - 13j D. v = 13j
Match the function with its graph.f(x) = log3 (-x)
A. 
B. 
C. 
D. 