To find the inverse function, interchange the variables and solve for y.
f^-1(n) = 1/2 + n/3
Since you that that line is 180 degrees you can simply do 180-149 and find that the answer is 31 degrees. So you would do 13x+5=31, 31-5=26, 26/13, and then x=2 :)
-4(-5) = -4*-5 = 20
6 - (-4) = 10
Quotient = 20 /10 = 2 answer
I suggest using keep change flip
5b-2=13 add 2 to both sides
5b=15 divide both sides by 5
b=3
