Find the vertices and foci of the ellipse.49x2 + 64y2 = 3,136
A. Vertices: (0, ±8); Foci (0, ±
)
B. Vertices: (±8, 0); Foci: (±
, 0)
C. Vertices: (0, ±7); Foci (0, ±
)
D. Vertices: (±7, 0); Foci: (±
, 0)
Answer: B
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Solve.
- 
= 
A. 42 B. 14 C. 28 D. -14
List the intercepts of the graph.Tell whether the graph is symmetric with respect to the x-axis, y-axis, origin, or none of these. 
A. intercept: (0, 4) no symmetry B. intercept: (4, 0) symmetric with respect to y-axis C. intercept: (4, 0) no symmetry D. intercept: (0, 4) symmetric with respect to x-axis
Solve the problem.The resistance of a wire varies directly as the length of the wire and inversely as the square of the diameter of the wire. A 20 foot length of wire with a diameter of 
has a resistance of 
What would the resistance be for a 
length, with diameter 
of the same kind of wire ?
A. 16.95 ohms B. -2.05 ohms C. 2.45 ohms D. 4.95 ohms
Suppose that ? is in standard position and the given point is on the terminal side of ?. Give the exact value of the indicated trig function for ?.(-7, -2); Find cot ?.
A. - 1
B. 
C. 
D. - 