Find any numbers for which the rational expression is undefined.
A. x = -25
B. x = -5
C. x = 0, x = - 
D. none
Answer: D
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Determine whether the given function is one-to-one. If it is one-to-one, find a formula for the inverse.f(x) = 6x - 7
A. f-1(x) = 
+ 7
B. f-1(x) = 
C. f-1(x) = 
D. Not one-to-one
Graph the inequality.
+ 
? 1
A. 
B. 
C. 
D. 
Solve the problem. Round to the nearest tenth when necessary.A comet follows the hyperbolic path described by 
where x and y are in millions of miles. If the sun is the focus of the path, how close to the sun is the vertex of the path?
A. 4.7 million mi B. 7.1 million mi C. 1.3 million mi D. 36 million mi
Solve the problem.The output voltage for an AC generator is approximated by
Find the smallest positive value of t for which the output is 47 volts.
A. 0.0122 second B. 0.0051 second C. 0.0132 second D. 0.0061 second