What are the common factors of 8 and 16

What is the maximum total area that 450cm of string can enclose if it is used to form perimeters of two adjoining rectangles as shown?

Jenny earned a 77 on her most recent test jenny score is no less then 5 points greater then 4/5 of terrance’s score if t represents terrance score which inequality represents the situation

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab