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First we need to establish the fact that angles on a straight line ALWYS add up to 180
So, we solve the equation for x which turns out to be 3
But,were not done. The question asks us to find the value of the angle BOC
so we substitute the value of x into the equation for BOC (which is 6x+29)
And then your answer is 47 degrees
Use the remainder theorem: we can decompose the given polynomial in terms of quotient and remainder polynomials
and
, respectively, such that

Then letting x = -3 makes the quotient term vanish, and we're left with a remainder of

I tried to do it and didn’t get any answer choice you provided, but to find the radius of a circle using circumference you take the circumference and divide it by 2 times pie. Which would be 185 or 183/6.28
Hoped this helped you sorry