ANSWER
The value of d that makes the equation true is

EXPLANATION
The given equation is

We expand brackets to obtain,

We group like terms to obtain,

This simplifies to

We divide both sides by 18 to get,
Answer:
40% less
Step-by-step explanation:
12 lb is 8 lb less than 20 lb.
-8 lb
----------- = -0.4
20 lb
Multiplying this result by 100%, we get -40%.
This year's turkey was 40% less than last year's.
Adding and subtracting are used in Please excuse my dear aunt sally, which if u never heard of this the P is for parentesies, E is for exponents, M stands for multiplication, D stands for Division, A is for adding, and S is for subtraction.
Also u use it during order of operations
You can use it for solving for a variable.
I am thinking is C but I am still not sure