Answer:
X = 17
Step-by-step explanation:
Mid segment theorem: the segment joining the midpoints of two sides of a triangle is half the length of the third side.
In order to solve this problem, you need to find out how 3 of something is 30
In this case, you multiply 10.
Sean= 3×10=30
Ryan= 4×10=40
Justin= 5×10= 50
30+40+50= 120
The answer is $120
Hope this helps
If you evaluate the function the answer is 563.94.