Which system of equations could be graphed to solve the equation below?

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

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?

Describe the domain and range of y=2(3)^x-2+5