Hiya. I'm going to rewrite the second equation.
By subtracting 5x by both sides, I'll be able to have y by itself:
-y=-5x+13
I'm going to then divide both sides by -1 to get:
y=5x-13.
Then, I'm going to plug that equation into the first equation 
3x+2(5x-13)=39
Factor:
3x+10x-26=39
Combine like terms:
13x=65
Divide both sides by 13 to get x by itself to get x=5
Plug this back into the equation of y=5x-13
y=5(5)-13 to get y=12
 
        
                    
             
        
        
        
Answer:
68
ignore the rest of this i need 20 charecters
 
        
             
        
        
        
For this case we have the following function:
 
 Where,
 g: number of gallons of gas
 M (g): number of miles that Danny's truck travels
 We know that the maximum capacity is 20 gallons of gas.
 Therefore, the maximum distance the truck can travel is given by:
 
 
 Thus, the domain of the function is:
 
 The range of the function is:
 
 Answer:
 A domain and range that are reasonable for the function are:
 D. D: 0 ≤ g ≤ 20
 R: 0 ≤ M (g) ≤ 340
 
        
             
        
        
        
5/6:x/5844
Cross multiply to get
29220=6x
x=4870
4870+5844=
10714 votes 
Hope this helped :)
        
             
        
        
        
<span>The expression 3x^3-5x^2+3x-1 has ___ terms and a constant of ____.
have four terms and 1 constant
</span>