Ross and Rachel collect fossils. Before they went on a fossil-hunting trip, Ross had 25 fossils in his collection, and Rachel had 16 fossils in her collection. On a fossil dig, they each collected 2 new fossils each day.

a. Fill in the table to show how many fossils each person has in their collection at the end of each day.

b.Based on your table, how many fossils does Rachel have when Ross has f fossils?

c. How many fossils does Rachel have when Ross has 55 fossils?