Road Sign Math

Geoff Hazel puts Washington on the board with this sign assembly that is overloaded with a variety of 13s! There are less than 10 states remaining to be posted in Road Sign Math.

Some nice mathematics here from Mr. Hazel. If you are having a hard time seeing the 35, it is in the small yellow bar in the sign that is on the median. It is the advised speed limit.

13 + 13 + 13 - (8 \div \sqrt{4}) = 35

This sign is at exit 13 on I-405 northbound in Bellevue, Washington. See sign on map!