Marta ate a quarter of a whole pie. edwin ate 1/4 of what was left. cristina then ate 1/3 of what was left. what fraction of the pie remains?

What are the domain and range of the functiony = 2(x - 3)2 + 4?

Brian, chris, and damien took a math test that had 20 questions. the number of questions brian got right is 14 more than the number of questions chris got right. damien correctly answered 2 less than the number of questions chris answered correctly. if brian and damien have the same score, which statement is true?

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?