Find the standard-form equation of the hyperbola centered at the origin which satisfies the given conditions.Vertices at (3, 0) and (-3, 0); foci at (8, 0) and (-8, 0)
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Answer: B
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Solve the problem.The Van der Waals equation provides an approximate model for the behavior of real gases. The equation is P(V, T) = 
- 
, where P is pressure, V is volume, T is Kelvin temperature, and a,b , and R are constants. Find the partial derivative of the function with respect to each variable.
A. PV = - 
+ 
; PT = 
B. PV = 
; PT = 
- 
C. PV = 
- 
; PT = 
D. PV = 
- 
; PT = 
Use the data set {-100, -99, -98, ..., -2, -1} to answer the following question(s).The data set has a mean of
A. -50.5. B. -50. C. -51. D. -49.5. E. none of these
Use a proportion to solve the problem.Under typical conditions, 1
ft of snow will melt to 2 in. of water. To how many inches of water will 2
ft of snow melt?
A. 4
in.
B. 3
in.
C. 3
in.
D. 5
in.
Decide whether the composite functions, f ? g and g ? f, are equal to x.f(x) = 
, g(x) = x
A. Yes, no B. Yes, yes C. No, no D. No, yes