- Choice A
$$ -\frac{1}{81}=-3^x $$
$$ -\frac{1}{(3)^4}=-3^x $$
$$ -(3)^{-4}=-3^x $$
$$ \therefore x=4 $$
Skills you are tested for:
Was this explanation helpful?
$$ -\frac{1}{81}=-3^x $$
$$ -\frac{1}{(3)^4}=-3^x $$
$$ -(3)^{-4}=-3^x $$
$$ \therefore x=4 $$
Comments