2
the ratios of the outputs for inputs that are 1 apart is
ratio =
=
=
= 2
This is also true for the fractional outputs
It would be 4. Multiply each side by -1/5.
It would cancel out the -1/5 leaving -15 = x.
Answer is 3(n + 1)(n + 2)
That means there are 24 chairs. What you would do is multiply 8 by 3 which gives you 24.
Im pretty sure the correct answer is the fourth one