8x+2=-3+5x+17 can you give me the answer to my please and thank u

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

What is the location of maximum over the interval [-3,1.5] for the graphed function?

Dana wants to identify the favorite professional baseball team of people in her community. she stands outside a local sporting goods store and asks every other person who enters, "what is your favorite professional baseball team? " will the results of her survey be valid? explain.