Evaluate the integral by making a substitution and then using a table of integrals.
A. 
tan-1 
+ C
B. 
tan-1 
+ C
C. 
sin-1 
+ C
D. 
sin-1 
+ C
Answer: B
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Solve the problem.The Redlich-Kwong equation provides an approximate model for the behavior of real gases. The equation is 
where P is pressure, V is volume, T is Kelvin temperature, and a,b , and R are constants. Find the derivative of the function with respect to each variable.
A. PV = 
+ 
; PT = - 
+ 
B. PV = 
- 
; PT = 
+ 
C. PV = 
+ 
; PT = 
- 
D. PV = 
- 
; PT = 
+ 
Multiply.136(0.1)
A. 13.6 B. 13,600 C. 1360 D. 1.36
Solve the problem.A drugstore sells two types, A and B, of humidifiers. Each humidifier of type A and type B costs $10 and $20, respectively. The store wants at least 8 humidifiers in stock and does not want its investment in the humidifiers to exceed $1000. Graph the possible inventory of the humidifiers and find the vertices. 
A. 
B. 
C. 
D. 
Solve the problem.A reflecting telescope has a parabolic mirror for which the distance from the vertex to the focus is 34 feet. If the distance across the top of the mirror is 72 inches, how deep is the mirror in the center?
A. 
in.
B. 
in.
C. 
in.
D. 
in.