PLS HELP ME I WILL GIVE BRAINLIEST

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

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.