Question

Please help! Thank you :)

Answer 1

x=-10/3

Explanation:

`81=27^(-x-2) \\\\81=9^2=(3^2)^2=3^4\\\\27=9*3=3^3\\\\3^4=(3^3)^(-x-2)\\\\3^4=3^(3(-x-2))\\\\3^4=3^(-3x-6)`

as you see the bases are the same so the exponents must be the same too

`4=-3x-6\\\\4+6=-3x\\\\10=-3x\\\\x=(-10)/(3)`

Answer 2

-10/3

Explanation: