Find the value of x 9. fx-gx=h
10. qx+x=r
11. m=x+n/p
12. d=f+fx
13. -3(x+n)=x
14. x-4/y+2=5
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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?

Simplify. 3(4+4x) (type your answer in with no spaces)

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?