What is the scale factor of the dialation

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

What is fraction that is equivalent to 3/8

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?