Objective $1,4$

Sara Pacheco is a sophomore in college and earns a little extra money by making beaded key ring accessories. She sells them on Saturday mornings at the local flea market. Sara charges $$5$ per unit and has unit variable costs $($beads$,$ wire rings, etc.$)$ of $$2.$ Her fixed costs consist of small pliers, a glue gun, etc., which cost her $$90.$