What statement is true ? Both the domain and range are all real numbers

The range is 7 and the domain all real numbers

The range is all real numbers but the domain is 7

Both the domain and range are 7

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?

Arestaurant charges $100 to rent its banquet room for an event. it also charges $15 to serve dinner to each guest. write an equation for the total cost of the banquet room in terms of the number of guests. deine your variables. what is the total cost of the banquet room for 20 guests?

According to the data set, where should the upper quartile line of the box plot be placed?