Quick , . given f(x) =4x^2-9 and g(x) = 2x+3, find each function or value. 1. (f-g)(4) 2. (fg)(5)

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?