Whoever gets all three questions correct I will mark them brainlist

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.

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

Guys i really need or i have to stay late up night