Anya is awake for 100 hours per week. Using one diagram, show Anya's budget constraints if she earns $12 per hour, $16 per hour, and $20 per hour. Now draw indifference curves such that Anya's labor-supply curve is upward-sloping when the wage is between $12 and $16 per hour and backward-sloping when the wage is between $16 and $20 per hour.