Is this linear or exponential? or neither

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

Find the dimensions of the circle. area = 64π in.² r= in.

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.