How many solutions per each equation?

Somone me i want to know what 18 hours out of 24 hours in a fraction

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

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?