Look at the table. Is this a function or not a function? ​

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second

Me n o w. i need t h i s. 10 points

Eden has a part time job. she is paid ? 7.20 an hour the week she worked 18 and a half hours how much is she paid