Please help? Do not send links plz

In a school 2/3 of the students study a language of those who study a language 2/5 study french

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

Which inequality has a dashed boundary line when graphed ?