For a 30 sided polygon, what is the degree of rotation?

interior angle of n-gon formula: 180 - ( 360 / n) 
a 30 sided polygon, so in this case n = 30
so
interior angle = 180 - ( 360 / 30) 
interior angle = 180 - 12
interior angle =  168

answer
168 degrees

It’s going to be d. 4x^2-4x-19’