Graph the equation by plotting points.y = 
A. 
B. 
C. 
D. 
Answer: B
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Find the equation of the hyperbola satisfying the given conditions.Asymptotes y = 
x, y = - 
x; one vertex (7, 0)
A. 
- 
= 1
B. 
- 
= 7
C. 
- 
= 441
D. 
- 
= 1
Determine an appropriate domain of the function. Identify the independent and dependent variables.A weather balloon of radius r (in meters) is filled with air. The volume V of the balloon is given by the function 
. Assume the balloon can hold up to 8 m3 of air.
A. D = 
The independent variable is r.
The dependent variable is V.
B. D = 
The independent variable is r.
The dependent variable is V.
C. D = 
The independent variable is V.
The dependent variable is r.
D. D = [0, 8]
The independent variable is r.
The dependent variable is V.
Provide an appropriate response. A plane is observed approaching a tower. Its speed is known to be 525 miles per hour. If the angle of elevation is 18° and 2 minutes later it is 65°, approximate the altitude of the plane.
A. 13.4 miles B. 17.5 miles C. 5.7 miles D. 20.6 miles
Use the graph of f(x) to solve the inequality.f(x) > 0
A. -1 < x < 0 or x > 1 B. 1 < x < 2 C. x < -1 or 0 < x < 1 D. -1 < x < 0 or 1 < x < 2