The answer is C I believe. I wasn't sure what exactly D was saying, but I am pretty sure the answer is C
20/100 * X = 8
X = 8*100/20
X=40
Answer:
The upper graph
Step-by-step explanation:
We have two quadratic function here

If we perform the function f(x) + g(x), which is nothing more than the sum of the two functions, we obtain a linear function, since the quadratic terms are eliminated by themselves

Answer:
choose the last option .
you could check my answer using desmos graph (search on Google)