What is the inverse of the function f(x)=x+1/x

Darian wants to build a regulation size pool table that is 9 feet in length.he plans he ordered are 18 by 36 inches. what is the scale factor of the dilation he must use to build a regulation pool table

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Ineed no it anyone can see this