Answer:
15(2) + x(2)= perimeter 
Step-by-step explanation:
 
        
             
        
        
        
Let m represent the number of mile Greg drove. His rental charge was
   207.45 = 16.99 + 0.89m
Subtract 16.99 and divide by 0.89
   190.46 = 0.89 m
   214 = m
Greg drove the truck 214 miles.
        
             
        
        
        
Let the number of sodas sold be x and the number of hotdogs sold be y. We can assemble a system of equations from the information given and solve.
x+y=170 (We know that soda + dogs is 170)
x-50=y (We know that dogs is equal to 50 less than sodas)
We can use substitution to solve this system of equations.
x+y=170
Sub in the value of y from the second equation
x+(x-50)=170
2x-50=170
2x=220
x=110
We now know the number of sodas sold was 110. Lets now plug this value into the equation to solve for y.
x+y=170
110+y=170
y=60
So, there were 60 hotdogs sold and 110 sodas sold.
 
        
             
        
        
        
1week = 7days so
4weeks = 28 days
So 28 x 640 = 17920
1000grams = 1kg
17920 divide 1000 =17.92
Lee uses 17.92kg in those 4weeks
        
             
        
        
        
The ratio to that problem is 6