Look at the given graph. Start at x=0. Mark x=1/8. The first cut piece will have length 1/8, which stretches from x=0 to x=1/8. Mark x=1/4. The second cut piece will have length 1/8, which extends from x=1/8 to x=1/4. And so on. When you finally have a cut piece the ends at x=3/4, count the number of cut pieces that you have drawn between x=0 and x=3/4.