Nina has a job repairing sailboats. to repair a sailboat, she charges a flat fee of $100 plus $40 per hour. the total in dollars, y, is a function of x, the number of hours nina works.

When eating out, record the total cost of your meal (before tip) and the tip that you left. determine the percent of the cost of the meal that you left as a tip.

Asphere has a diameter of 10 in. what is the volume of the sphere?

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?