PLEASE HELP I DONT UNDERSTAND IT EXPLAIN YOUR ANSWER THO
WOULD IT BE 5

Answer:
That is correct, The answer IS 5. Good job
Step-by-step explanation:
I know how A.P.E.X can be confusing, but keep trying!
I believe the answer is 5 because that has to add up to 30 because it is a triangle.
PLEASE MARK BRAINLIEST