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(1) According to the meaning of the question, the number of votes for Type B is 3x+8.

Then y= 100-x-3x-8 is simplified, and y =-4x+92.

That is, the functional relationship between y and x is: y =-4x+92;

(2) simplification of w = 60x+100 (3x+8)+150 (-4x+92),

w=-240x+ 14600

That is, the functional relationship between the total ticket purchase cost w and x (tickets) is: w=-240x+ 14600.

(3)x≥2092? 4x≥ 1,

The solution is 20≤x≤9 14,

∵x is a positive integer,

∴x can be 20,2122.

Then * * * there are three ticket purchasing schemes.

Dependent function relation w=-240x+ 14600.

∵-240