If it is known that (a+b)/(a-b)=c ,find ((a+b)^(2))/((a-b)^(2))

Solve for x i'll try to attach the files bc it's not letting me for some reason

Me what is the value of x? showing work would be appreciated - ! : )

The late fee for library books is $2.00 plus 15¢ each day for a book that is late. if maria’s fee for a late book was $3.20, write and solve a linear equation to find how many days late the book was.