Graph the function and then find the specified limit. When necessary, state that the limit does not exist.y = x2 - 1; 
f(x) 
A. 
f(x) = 1
B. 
f(x) = -1
C. 
f(x) = -1
D. 
f(x) = 1
Answer: C
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Solve the problem. Round your answer to the nearest whole number.A line from the top of a cliff to the ground passes just over the top of a pole 7.0 feet high and meets the ground at a point 6.0 feet from the base of the pole. If the point is 64 feet from the base of the cliff, how high is the cliff?
A. 2688 feet B. 75 feet C. 6 feet D. 448 feet
Find the center, transverse axis, vertices, foci, and the equations of the asymptotes of the hyperbola.121y2 - 9x2 = 1089
A. center: (0, 0)
transverse axis: y = 0
vertices: (-3, 0), (3, 0)
foci: (-11, 0), (11, 0)
asymptotes: y = - 
x and y = 
x
B. center: (0, 0)
transverse axis: x = 0
vertices: (0, -3) and (0, 3)
foci: (0, -
) and (0, 
)
asymptotes: y = - 
x and y = 
x
C. center: (0, 0)
transverse axis: y = 0
vertices: (-11, 0), (11, 0)
foci: (-
, 0) , (
, 0)
asymptotes: y = - 
x and y = 
x
D. center: (0, 0)
transverse axis: x = 0
vertices: (0, -3), (0, 3)
foci: (-
, 0) , (
, 0)
asymptotes: y = - 
x and y = 
x
Solve the problem.How many different 4-letter radio-station call letters can be made if the first letter must be K or W, repeated letters are allowed, but the call letters cannot end in an O?
A. 35,152 B. 456,976 C. 33,800 D. 16,900
Simplify the rational expression.
A. 
B. 
C. 
D. 