from 1980 to 2000, the annual profit of a company was determined by subtracting the product of $25,000 and the number of years either before or after 1990 from $625,000. Which of the following equations below could be used to determine in which year, x, the profit was $550,000?

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

The rectangle shown has a perimeter of 108 cm and the given area. its length is 6 more than five times its width. write and solve a system of equations to find the dimensions of the rectangle.

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?