If you have 6 rolls of paper towel, 60 sheets per roll for $3.49 how much is that per sheet?

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

This question awards 100 ! i really don’t want to fail i will also mark you !

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?