Dave collect rocks. he makes 12 groups of 10 rocks and has none left over. hove many rocks does dave have?

If 25% of y is 30, what is 60% of y?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

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?