Need help with part b for 17 :) marking brainliest

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

What is the the greatest common factor ?

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?