Find the equation of the hyperbola.Vertices at (5, 0) and (-5, 0), foci at (9, 0) and (-9, 0)
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Answer: D
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Use implicit differentiation to find dy/dx and d2y/dx2.x2 - y3 = 2
A. 
= 
; 
= 
B. 
= 
; 
= 
C. 
= 
; 
= 
D. 
= 
; 
= 
Find the area of the surface generated when the given curve is revolved about the x-axis. y = 4x + 5 on [0, 6]
A. 
B. 192
?
C. 204
?
D. 204?
The concentration (in milligrams/cubic centimeter) of a certain drug in a patient's body t hr after injection is given by
?
.
?
When is the concentration of the drug increasing, and when is it decreasing?
?
A. Increasing on 
, decreasing on 
B. Increasing on 
, decreasing on 
C. Increasing on 
, decreasing on 
D. Increasing on 
, decreasing on 
E. Increasing on 
, decreasing on 
State whether the function is linear or quadratic.f(x) = 0.6x2 - 4x - 32
A. Linear B. Quadratic