Is there supposed to be an image? Adjacent is adjoining, so like touching each other. Vertical is "up". Horizontal is "side"
Answer:
x1 = 8+√10, x2 = 8 -√10
Step-by-step explanation:
x² - 16x + 54 = 0

Starts off with 67 people.
Pier two: 67 + 36
103 - 23 = 80
Pier three: 80 + 18
98 - 29 = 69
There will be 69 people on the boat heading for Pier four
Sadly there is no way to graph properly on this website.