Lifeguards counted the number of surfers in the water at two different locations, sunny beach and sandy point. they recorded the number of servers every half hour from 10 a. m. to 5 p. m. and then made line plots of the data. what is the degree of overlap of the two data sets distributions? a. highb. moderatec. lowd. none

Whats the name of the vertical axis

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?

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9