At Camille's Hats, 70% of the hats in the store are baseball caps. If there are 28 baseball caps, how many hats are in the store?

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 graph represents the equation y =4x

What does independent variable and dependent variable mean in math?