Answer:
Step-by-step explanation:
1 cheeseburger and 20 fries 
 
        
                    
             
        
        
        
The expression that models the length of the second leg of the triangle is <u>2x - 3.</u>
<u><em>Recall</em></u>:
The area of a triangle = 
<em><u>Given</u></em>:
Area of triangle = 
Length of one of the legs = 3x + 1
Therefore, it means that multiplying both legs should give us:

To find the expression that models the other leg, divide  by 3x + 1:
 by 3x + 1:

 

Therefore, the expression that models the length of the second leg of the triangle is <u>2x - 3.</u>
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Learn more here:
brainly.com/question/20712284
 
        
             
        
        
        
Answer:
The answer would be the first one, combining 8 and -2
Step-by-step explanation:
This is because the 2 like terms are 8x^2 and -2x^2. You can get this by looking in the problem. There are 2 terms with x^2 which means we have to combine them. One of them is 8x^2 (the 1st one) and the other is -2x^2 (since it says 7-2x^2)
If you combine these you will get 6x^2 [8+(-2)=6]