270 I think but I’m not 100% sure
Don’t click on the file they can get your ip address.
Find the vertex by either graphing ( See attached picture) or setting the value in the absolute value bracket to 0:
Vertex is (300,400)
Because it is symmetrical, find the length of one side and double ot for total distance.
Using the distance formula shown on the attached picture.
Answer:
x>1
Isolate the variable by dividing each side by factors that don't contain variables
3, 13
(2 × midpoint - endpoint)
Mark brainliest please