Answer: 140 degrees
A straight line is 180 degrees. Since we know one of the angles in the line is 40, we just subtract 40 from 180. So, the measure of angle 1 plus the measure of angle 2 is 140 degrees.
:)
Y = 2x + 1
y = 2(-1) + 1
y= -2 + 1
y= -1
4.5 x 6.2 = 27.9
Hope that helps