Answer:
Step-by-step explanation:
14.3 + 21.1 + x = 50
35.4 + x = 50
x = 50 - 35.4
x = 14.6 <=== she biked 14.6 miles on the 3rd day
The y-coordinate is 42.
Hexagons have 6 sides. Since the x-coordinate is 7, there are 7 hexagons. 7 hexagons * 6 sides each = 42 sides for the y-coordinate.