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


 
        
             
        
        
        
Answer:
q = 2/3p - 3
Step by step:
2q+2p = 1+5q
2q - 5q = -2p + 1
-3q = -2p + 1
q = 2/3p - 3
        
             
        
        
        
Disivible By 3 : 15,18
Divisible By 2 : 10,12,14,16,18,20
Divisible By 9 : 18,