Answer:
63
Step-by-step explanation:
use tangent formula
(1,3),(1,4),(1,5),(1,6),(2,3),(2,4),(2,5)
x+y<8. Let y=1, then x=(3, 4,5,6). If y=2, x=(3, 4,5).
-8
Pluck in the values:
P = 3 + (-11)
P = 3 - 11 = -8
i think its 2.7