Regan runs her own hot dog stand on the U of A campus. The monthly cost of the cart rental and business permit is $200. Regan's contribution margin per unit is $2.00 and contribution margin ratio is 50%. 1. How many hot dogs does Regan need to sell each month to earn a target profit of $ 900 a month? 2. How much sales revenue does Regan need to generate each month to break even each month to earn a target profit of $ 900 a month?