I think it would be 16.95 Hope this help you in someway.
Answer:
y= 1/4 x-62+1
Step-by-step explanation:
we know that
The measure of the interior angle is the half-summit of the arcs that comprise it and its opposite
so

therefore
the answer is
the measure of arc TU is equal to 
6.) 9
5(9)+18=63
Divide 9+13x (since its the entire line) by 2 to get 4.5+6.5x so it can equal Half
4.5+6.6(9)=63
7.) IF=HF
The three lines indicate they are equal to eachother
Hope that helps!