Brianna works in a department store selling clothing. She makes a guaranteed salary of $350 per week, but is paid a commision on top of her base salary equal to 20% of her total sales for the week. How much would Brianna make i n a week in which she made $1475 in sales? How much would Brianna make in a week if she made x dollars in sales? Earrings when selling $975 ? Earring when selling $x ?