Andrew had $50 and saved x dollars in a month. Anne had $60 and saved half as many dollars in a month as Andrew. How many did Andrew save if they had the same amount of money at the end of the month

Name the most appropriate metric unit for each measurement

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?

Ellen makes and sells bookmarks. she graphs the number of bookmarks sold compared to the total money earned. why is the rate of change for the function graphed to the left?