Solve the problem.A biology experiment required pouring 
gallon of nutrient solution and 
gallon of pure water into a tank. At the end of the experiment, 
gallon of fluid had evaporated. How much fluid remained in the tank?
A. 
gallon(s)
B. 
gallon
C. 
gallons
D. 
gallon
Answer: D
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Find the numerical value of the rational expression for the given value of x.
, x = -3
A. 
B. - 
C. 
D. - 
Provide an appropriate response.Is the best buy (lowest cost per unit) always the best value? Give an example when this is not true and explain why.
What will be an ideal response?
Add or subtract the rational expressions. Reduce to simplest terms.
+ 
A. 1
B. 
C. 
D. 
Provide an appropriate response.Years ago, people used fountain pens. The ink was very "wet" and so a blotter was used to absorb "wet" ink left on the surface of the paper. Suppose you have a single sheet of graph paper and that you have just used your fountain pen to graph the one-to-one function f. Explain how, if the ink is "wet", you could now obtain the graph of f-1 using only your sheet of graph paper. (Hint: Fold the sheet of graph paper.)
What will be an ideal response?