Janina spends $30 each day for rent and uses $12 worth of supplies daily to run her pancake stand. If she sells each pancake for $2, how many pancakes must Janina sell each day to cover her expenses? Give me reasons, before answering the question
Janina spends $30 + $12 = $42 each day for her pancake stand. She must sell $42 / $2 = 21 pancakes each day to cover her expenses. So the final answer is 21.