Between 9 P. M. and 6:20 A. M. , the water level in a swimming pool decreased by 7 (1)/(2) in . Assuming that the water level decreased at a constant rate, how much did the water level drop each hour?

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?

Which of the following tables represents exponential functions?

Which ordered pair is a solution of the equation? 2x+3y=10