The answer should be $29,952.... I hope this helps
X=9
Y=2 i think it’s the answer
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
As you can tell, the next time decreases by three every time. So, the tenth term would be -29.
-2,-5,-8,-11,-14,-17,-20,-23,-26,-29