What the person said up above should be correct!
Each line has a difference of four
The blue dot should be -10
A.) 155
123 + 47 + 35 = 205
Subtract 205 with 360 (360 is the measure of a circle) and you will be left with 155°.
I believe you would take 127.5 and divide it by 8.5, try that and see if that works, hope this helps!
Its 36 because 6x2 is 12 and 12 x 3 equals 36
