Find the domain of the function h.h(x) = 
A. {x| x is a real number and x ? -9 and x ? -6 and x ? 6 and x ? 0}
B. {x| x is a real number and x ? -9 and x ? -6}
C. {x| x is a real number and x ? 0}
D. {x| x is a real number and x ? 9 and x ? 6}
Answer: B
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The vector r(t) is the position vector of a particle at time t. Find the angle between the velocity and the acceleration vectors at time t = 0.r(t) = sin-1(9t)i + ln(2t2 + 1)j + 
k
A. 
B. 
C. 
D. 0
Evaluate the sum. Round to two decimal places, if necessary. 
A. -0.7 B. 0.43 C. 0.75 D. 38
Give the equation of the vertical asymptote(s) of the rational function.g(x) = 
A. x = 0, x = 2, x = 7 B. x = 2, x = 7 C. x = 1, x = -2, x = -7 D. x = -2, x = -7
Solve the problem.The angle of elevation from the top of a house to a plane flying 9000 meters above the house is x radians. If d represents the horizontal distance, in meters, of the plane from the house, express d in terms of a trigonometric function of x.
A. d = 9000 cot x
B. d = 9000 tan x
C. d = 9000 sec x
D. d = 