Answer: -4 . 2ⁿ⁻¹
Step-by-step explanation: This is a geometric progression
the nth term is given by arⁿ⁻¹
a = the first term of the sequence
r = common ratio
n= number of terms
for this sequence
a = -4
r = -8/-4 = 2
nth term, an = -4 . 2ⁿ⁻¹
What’s the question?
If it’s area then the formula is pi r^2
If it’s the circumference then the 2pi r or pi d

The multiple zero is x = -4.
The multiplicity is 2 because there are two values of x.
The think the answer is D.