HELP PLSZ

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.

1. what is the measure of ∠abc? what is the measure of ∠abd?

For what values of x is x2 + 2x = 24 true?