Alexandra wants to save for a new DVD. She decides to put $2 towards her purchase every week. Her parents decided to give her a head start on her savings and gave her $6 towards her new DVD. Which expression gives the total savings after w weeks? a.2w
b.8w
c.2w+6
d.6w+2

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.