Pls help me :D show ur work

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

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.

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.