Pls help me , ;-;

Due to financial difficulties the owner of 4 skateboard stores is going to close 2 of his stores. based on the money earned at each store, which two stores should remain open?

Agallon of apple juice cost $7 a pack of eight 4.23oz box of apple juice $2.39 which is a better deal

What are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?