The graph shows how many square feet of Gilly’s garden she was able to landscape over the course of a week. According to the graph, approximately how many days did it take Gilly to plant 100ft2 of her garden.

Based on the graph, Gilly landscaped approximately 70ft2 on day 5 and approximately 130ft2 on day 7. Therefore, she landscaped 100ft2 in between day 5 and day 7, which is approximately 2 days.