The equations are listed as follows: 2x+2 = 32；;

(2) According to the stem, if the bottom of the trapezoid is x cm, the quantitative relationship can be obtained according to the area formula of the trapezoid:

(upper bottom+lower bottom) × height ÷2= trapezoidal area,

The listed equation is 7 (3+x) ÷ 2 = 38.5;

(3) According to the question, if the daughter is X years old this year, then the father's age is 4x. According to the meaning of the question, we can get the equivalence relation:

Dad's age-daughter's age =30,

The equation listed is 4x-x = 30.

Therefore, the answer is: the number of women ×2+2= the number of boys; 2x+2 = 32； (upper bottom+lower bottom) × height ÷2= trapezoidal area, 7 (3+x) ÷ 2 = 38.5; Dad's age-daughter's age =30, 4x-x = 30.