This is what I got I hope it helps
 
        
        
        
Step-by-step explanation:
C + 1 = 2(L-1)
C +1= 2L -2
C- 2L = -3 ......(eq.1)
L+1 = C-1
C- L = 2 .....(eq.2)
by elimination :
C - 2L = -3
C - L = 2
________-
 - L = -5
L = 5
C = 2+5 = 7
so, Leo has 5 cars and Charlie has 7 cars
 
        
             
        
        
        
Think about it this way, that for every 5/6 pound bag you are losing 1/6 and 1/6*12=2 therefore the answer is 12
        
             
        
        
        
Answer:
Firstly 
f(x)=3x-2=y then
Interchanging x and y we get 
x=3y-2
x+2=3y
y=(x+2)/3
f-1(x)=(x+2)/3
f-1(13)=(13+2)/3
f-1(13)=5
 
        
             
        
        
        
Answer:
hello : 
If f(x)=x-2 and g(x)=1/2x,
 g(f(x)) = g ( x - 2 )
           = 1/2(x-2)
g(f(x)) = (1/2)x - 1