Afair number cube is rolled. what is the probability that an odd number is rolled?

In the diagram below what is the approximate length of the minor arc ab

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.

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?