Answer:
uhm im really sorry about this but i really need points i would help but id get it wrong im bad aat math
Step-by-step explanation:
The data value 2.5 will lie below the second quartile
The number is 142
you first make an equation ;
86+x=2x-56
Add 56 to both sides
142+x=2x
Subtract x from both sides
142=x
Answer: The vertex is x=-7/6
*The graph is below*
Hope that this helps!