part a kate used the rule shown to create a group of numbers. the numbers are positive integers. identify all the numbers that meet kates rule

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.

100 points, hi, i’m not sure how to get the equation from the graph and table.

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)