A woman paid $140 for 4 balcony seats and 5 orchestra seats for a concert. Another woman paid $151 for 2 balcony seats and 7 orchestra seats. What was the cost of one
balcony seat? Of one orchestra seat?
Let b = cost of balcony seat
c= cost of orchestra seat

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12

What is x and y intercepts for y=x+7

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?