You can use a calculator for this if you have the graphing kind (I use a Ti-84) and when plugging the equation in, the answers should be b, d, and e 
        
             
        
        
        
Answer:
Part 1)  
Part 2) 
Step-by-step explanation:
Part 1) 
we know that
The perimeter of triangle is equal to the sum of its length sides
so

Part 2) 
we know that
The area of triangle is given by the formula

we have

substitute

 
        
             
        
        
        
<span>Simplify 3ab + 4ab + 5
= 7ab + 5 (combine like terms)
hope it helps</span>
        
                    
             
        
        
        
The “math sentence”: To find the answer, I need to divide the six chocolate bars by 3/4. 
To model the situation, you need to draw 6 squares divided into quarters. Color in 3 of the quarters in each square. 
Finally, write this for the solution sentence:
By giving 3/4 of a chocolate bar to each of her friends, Mrs. Lopes will be able to share her 6 chocolate bars with 8 different friends.
Hope you get that A+!
        
             
        
        
        
Answer:
A. 3(x-5)
Step-by-step explanation:
USE M-A-T-H-W-A-Y