Answer:
Option B. [tex]150\°[/tex]
Step-by-step explanation:
we know that
In this problem
[tex](15+15x)=(17x-3)[/tex]
solve for x
[tex]17x-15x=15+3[/tex]
[tex]2x=18[/tex]
[tex]x=9[/tex]
Find the measure of arc BC
[tex]arc\ BC=17x-3=17(9)-3=150\°[/tex]
