Answer:
[tex]\huge\boxed{\sf <NAB = 95\°}[/tex]
Step-by-step explanation:
Key: The measure of exterior angle is equal to the sum of measures of non-adjacent interior angles.
So, we get:
8x + 7 = 5x + 40
Subtract 5x and 7 to both sides
8x - 5x = 40 - 7
3x = 33
Divide both sides by 3
x = 11
Now,
∠NAB = 8x + 7
∠NAB = 8(11) + 7 [x = 11]
∠NAB = 88 + 7
∠NAB = 95°
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807
