Answer:

1.      The total for a term would be 2s + 1, where s= the number of smiley faces.

There are 2 rows of smiley faces.  One row has the same number of smiley faces as the term number and the other has 1 more than the term number, or s for one row and s + 1 for the other row.

2.      The 10^th term number in the pattern would have 21 smiley faces.