Write a quadratic equation that has one solution, with an axis of symmetry of x=3​

Which expression is rational? 6. , square root two, square root 14, square root 49

How many 3/8s are in 6 plz someone tell me now

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?