Each unit on a coordinate plane represents 1 mile. One end of the road starts at (212,23). The road ends at (6,23). How long is the road?

Distance formula : sqrt (x2 - x1) ^2 + (y2 - y1) ^2

(212,23) ... x1 = 212 and y1 = 23

(6,23) ... x2 = 6 and y2 = 23

now we sub

d = sqrt ((6 - 212) ^2 + (23 - 23) ^2)

d = sqrt (( - 206) ^2 + (0^2))

d = sqrt (42436 + 0)

d = sqrt 42436

d = 206 miles <==