Question 12 part one part 1

How many different ways can you make change for $.50 using only nickels, dimes, and quarters?

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?

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?