Can y’all help me on question 27?!

What’s the range cuz i can’t find it?

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?

P= price tax is 4% added to the price. which expression shows the total price including tax?