Write a problem involving ( how much more than) and solve it. explain how drawing a diagram you solve the problem.

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

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 represents the solution set of the inequality 5x-9 < 21? a. x < 12/5 b. x > 12/5 c. x > 6 d. x < 6