I know I've asked a lot of math questions lately but I just need to make sure I've got this right because I'm so close to not passing the class. (Need a C- to pass; have 68.6%)
I found one answer, but I don't know if there is more than one location for the fire.
First, I found the perpendicular bisector of Foster City and Belmont. Next, I constructed the angle bisector at the intersection of Hwy 92 and Hwy 101. The two rays intersect each other in the upper-right hand corner of the drawing. Are there more solutions?