Lizzie is 2 years older than three times her sister clarissa’s age. if clarissa is 4 years old, how old is lizzie? *** me***

Combine like terms7y^2 + 7(6y^2 − 8)

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?

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)