Answer:
B
Step-by-step explanation:
b and a=40⁰ so if b+c is supplementary they equal 180⁰ together so 180-40= 150⁰
3x-8+2x+5-4x+8
3x+2x-4x -8+5+8
x + 5
x+5
755
The sum of 308+622+381=755
x = 222