If we flip a coin 4 times , what is the probability that we get tails all 4 times ?

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?

Interpret the following expression (5y^2-7)^3/(2y)^2

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?