Technically you could answer this one by one, by substituting n with 1, 2, 3, 4, then 5. Like here: A1=(-2)A1-1 =(-2)A0, then substituting A0 with -1... =(-2)(-1) Which would mean A1=2. Then.. A2=(-2)A2-1 A2=(-2)A1 A2=(-2)(2) Which would mean A2=-4. By repeating this process you'd eventually get A4.. A5=(-2)A4 if you did the steps right you'd get that A4 is -16.. A5=(-2)(-16). Then simplify to get your answer.
It is neither equiangular nor equilateral because we are given no indication of the sides and angles and it cannot be regular since it is neither equiangular nor equilateral. Therefore, the answer is none of the above.
