Answer:
The measure of arc x is 
Step-by-step explanation:
we know that
The measurement of the external angle is the semi-difference of the arcs it comprises.
so
In this problem

solve for x


Answer:
f(x)=3x-4
Step-by-step explanation:
Sent a picture of the solution to the problem (s).
So for this, replace the r variable in the equation with 6 to solve:
