15 points! Please answer rigghtt

How do i put 3(x+7) in distributive property

The track team ran a mile and a quarter during their practice how many kilometers did her team runs?

Jo divides a candy bar into eight equal pieces for her children to share she gives three pieces to sam three pieces to leslie and two pieces to margie rose the two month old baby does it doesn't get any what fraction shows how muchw candy each of the four children got. what's the answer to my question