Apples are being packaged into boxes of two different sizes. The small box contains $x$x apples, while the large box contains $y$y apples.
|Small box, containing $x$x apples|
|Large box, containing $y$y apples|
Write an algebraic expression in simplest form to represent the total number of apples in the image below.
Use graphs, tables, and rules to describe linear relationships found in number and spatial patterns