Answer: B
Step-by-step explanation:
An individual's effective tax rate is the average tax rate.
THE ANSWER IS LYFE 3432423
So 1st make it equal to zero
x^2+4x-12
(x+6)(x-2)
so
x=-6 or 2 is the correct answer
Total volume of light-blue paint:

Divide by
to find how many containers he can divided this total into:

so the answer is B.