What's Evaluate 3z when z=9

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

Will give brainliest immeadeately true or false: the origin woud be included in the solution set for the inequality: y< 2x-5

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?