Joseph completed the two-way table on the left about
the social networking habits of his classmates as
follows:
Step 1: 85 – 30 = 55
Step 2: 80 – 55 = 25
Step 3: 140 - 80 = 60
Step 4: 60 – 30 = 30
Step 5: 25 + 30 = 55
The student made