Select the proper rearrangement and placement for parentheses to speed up the addition for the expression 2 + 9 + 8 + 1 a. (9 + 2) + (8 + 1) b. (8 + 2) + (9 + 1) c. (1 + 2) + (9 + 8) d. (8 + 9) + (2 + 1)

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?