1, (1) Let the first eight games win X games and draw Y games.

x+y=7

3x+y= 17

X=5，y=2。

(2)( 14-8)×3+ 17=35 (point)

(3) Set to win X field, draw Y field and lose Z field.

x+y+z=6

3x+y= 12

x=3+z/2

Get x=3.

That is, the team must win at least three games to achieve the expected goal.

2、