Alysa currently holds an 85 average in her Global class at Edgemont High School. With only three days left in the quarter, two assessments remain. Her 85 average is the mean of her three quizzes that they have had this quarter. Today Alysa will take a test that counts as much as 3 quizzes, and on Thursday she will complete a D. B.Q. that counts as 1 quiz. If she is to receive the same grade on both assessments, what grade does she need in order to earn an 89 for the quarter?

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

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?

Arace is 10 kilometers long.markers will be placed at the beginning and end of the race course and at each 500 meter mark.how many markers are needed to mark the course for the race?