Answer: -5
Step-by-step explanation:
i=integer
i+3(i+1)=-21
i+3i+3=-21
4i+3=-21
4i=-24
i=-6
i+1=-6+1=-5
Because (-5+ 1, - 2 + 6) = (- 4, 4) which is not equal to (-4, - 4).
3p+7=40 HOPE THIS HELPS!!