X² + ___ x + 49 plz answer as soon as possible

What is the measure of ac? 5 units 13 units 26 units 39 units

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Use circumcenter theorem to solve for the given values