Hii! Can anyone help me with these questions?

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)