The cost of the paint was $39 per gallon, so if the cost is $4,368, how many gallons did you buy?

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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?

Me asap! what is the slope of this line? enter your answer in the box.