The sum of interior angles in a triangle is equal to 180
two of the angles are given to find the third one we subtract their sum from 180
180 - (36+75) = 69 degrees
Domain is [-4, 4]
Range is [0, 4]
Domain is the fancy name for the values of x that works for the graph (input), in this case, from -4 to 4, inclusive.
Range is the fancy name for the values of y that works for the graph (output), in this case, from 0 to 4, inclusive.