the error was they forgot to make 18 a negative
Answer:
479,001,600 different arrangements
Step-by-step explanation:
Angle 1, 4, 5,7,10,12,13,15 : 133°
Angle 2,3,6,8,9,11,14,16 :47°
-2r - x - 3 ............
the answer should be Annie
