Aformula for a function y=f(x) is f(x)=x^2-10x, xless than or equal 5. find f^-1(x) and indentify the domain and range of f^-1(x). is f(f^-1(=f^-1(f(x))=x?

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Which expression is the factorization of x^2+10+21

Adolphin is swimming with her friend. the dolphin jumps to a height of 4.54.54, point, 5 meters above the surface of the water as her friend swims 9.89.89, point, 8 meters directly below her. what is the position of the dolphin's friend relative to the surface of the water? meters