Find the missing values: 7,200\80=(7,200/x) /x

this is for my fifth grade brother, i’m literally a sophomore and don’t know how to do it so pl help find answer and explain

Which function has the same domain as y=2x

Subscriptions to a popular fashion magazine have gone down by a consistent percentage each year and can be modeled by the function y = 42,000(0.96)t. what does the value 42,000 represent in the function?

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?