Solve.A comet follows the hyperbolic path described by 
where x and y are in millions of miles. If the sun is the focus of the path, how close to the sun is the vertex of the path?
A. 3.5 million mi
B. 31 million mi
C. 7.1 million mi
D. 2.1 million mi
Answer: D
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Graph the function.y = 
+ 1
A. 
B. 
C. 
D. 
Find the center, radius, and intercepts of the circle.x2 + y2 - 2x + 4y - 7 = 0
A. (h, k) = (1, -2), r = 2
x-int: x = 1 ± 2
; y-int: y = -2 ± 
B. (h, k) = (-1, 2), r = 12
x-int: x = 1 + 2
; y-int: y = -2 + 
C. (h, k) = (-1, -2), r = 2
x-int: x = 1 + 2
; y-int: y = -2 + 
D. (h, k) = (1, -2), r = 2
x-int: x = -1 ± 2
; y-int: y =2 ± 
Use DeMorgan's laws or a truth table to determine whether the two statements are equivalent.~(p ? q), ~p ? ~q
A. Not equivalent B. Equivalent
Find the indicated root of the given equation by using Newton's method.2x4 - 3x2 - 7x + 1 = 0 (the larger positive root)
A. 1.8111272 B. 1.8111097 C. 1.8111020 D. 1.8111239