Evaluate the expression, given x = -2, y = 3, and a = -4.(4x + 5y)(-2a)
A. 16
B. 56
C. -56
D. -304
Answer: B
Mathematics
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Solve the problem.The pressure of oxygen gas in a closed container can be described approximately by the Dieterici equation P = 
e-0.0006/T,where T is the Kelvin temperature of the sample and v is the volume in liters.If 
and 
, in what "direction" should we change (v, T) to make the pressure increase as rapidly as possible?
A. In the direction 
B. In the direction 
C. In the direction 
D. In the direction 
Mathematics
Complete.
= 
A. 
B. 
C. 
D. 
Mathematics
Find the domain and range of the function.f(x) = 
A. D: [0, ?), R: (-?, ?)
B. D: [0, ?), R: 
C. D: (-?, ?), R: 
D. D: (-?, 0], R:(-?, 0]
Mathematics
Determine whether the matrices are inverses. 
, 
A. No B. Yes
Mathematics