Which of the following statements describes one part of completing the square for x^2 + 4x = 32?
a. take the square root of 36 and add 2.
b. take the square root of 32 and subtract 2.
c. take the square root of 36 and subtract 2.

Jessica is organizing a guided tour of the rain forest. the average profit per person that the touring company makes is given by the rational expression 18x+35/x, where x is the number of people going on the tour. what does the numerator of this rational expression represents?