Find the asymptotes of the hyperbola.x2 - 
= 1
A. y = 
x, y = - 
x
B. y = 3x + 1, y = -3x + 1
C. y = 3x, y = -3x
D. y = 9x, y = -9x
Answer: C
Mathematics
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Solve the problem.A railroad tunnel is shaped like half of an ellipse. The height of the tunnel at the center is 11 ft and the vertical clearance must be 9 ft at a point 20 ft from the center. Find an equation for the ellipse. 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Find the value of d2y/dx2 at the point defined by the given value of t.x = 
, y = - t, t = 1
A. - 
B. 4
C. 
D. -2
Mathematics
Solve the problem.The total cost, C, of renting a truck for d days is given by 
How many days can the truck be rented for $138?
A. 14 days B. 4 days C. 2 days D. 5 days
Mathematics
Write the indicated term of the binomial expansion.(2x + 8)3; 3rd term
A. 768x B. 384x C. 96x2 D. 64
Mathematics