Problem Situation: Julio has $127 in his bank account. He gets $30 for his birthday. He also has a part-time job that pays $9 per hour. How many hours will he need to work to have $220 in his bank account? Choose the equation that correctly models the situation. The letter h represents the hours Julio will need to work.

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?