At the animal shelter there are 15 dogs 12 cats 3 snakes and 5 parakeets which animal makes up approximately 14 % of the animals in the shelter

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?

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)