Please solve question in the pic

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)

If we pull out the middle player of team a and the fourth player of the team b. what will be the force of team a and team b? what is their sum of forces