The two-way table shows the number of students in a middle school who have 0, 1, 2, or 3 siblings.

Siblings Grade 7 Grade 8 Total
0 10 7 17
1 15 14 29
2 8 18 26
3 7 6 13
Total 40 45 85
How many more 7th graders than 8th graders have 1 or no siblings?

You are choosing between two health clubs. club a offers membership for a fee of $ 28 plus a monthly fee of $ 20. club b offers membership for a fee of $ 20 plus a monthly fee of $ 22. after how many months will the total cost of each health club be the same? what will be the total cost for each club? in __ months the total cost of each health club will be the same.