Please help its due soon ill give brainlest

Which situation is an example of an observational study?

What is the inverse of the function fx = 2x-10

Dana kicks a soccer ball. the table shows the height of the soccer ball with respect to the time, in seconds, after the ball was kicked.time | height(seconds) | (feet) ~~~~~~~~~~~~~~~0.5 211 341.5 392 362.5 253 6which graph best displays the relationship shown in the table? (i just need confirmation that its c)