I've a geometry teacher who doesn't teach! Help with this please!

http://i4.photobucket.com/albums/y10...s/triangly.jpg

Which equation below correctly represents the relationship of the sides given in the diagram above?

a. 3x-2+2x+17=360 degrees b. 3x-2+2x+17=180 degrees

c. 3x-2+2x+17=90 degrees d. 3x-2=2x+17