9514 1404 393
Answer:
(d) 360°
Step-by-step explanation:
The sum of exterior angles of any convex polygon is 360°.
2x + 6
= 2(x + 3)
= 2(x) + 2(3)
= 2x + 6
x=2
x is what 5 is going to multiply
90
c is the answer