Answer:

Step-by-step explanation:
Given


Required
Determine 
In functions;

So, we have:


Substitute values for R(x) and C(x)

Open bracket

Collect Like Terms


use the app called "photo math" will give you your answers i would but the pic is too blurry
Answer:
3rd graph
Step-by-step explanation:
Answer:
u can use fraction calculator
Step-by-step explanation:
just go and search 'fraction calculator'
So basically the answer would be A and C bestie♂️