The anwser is 5x-3 because you remove the parentheses and pair like terms
        
             
        
        
        
I got 1,727,940 
Plug in the numbers
        
                    
             
        
        
        
Answer:
about 3 seconds
Step-by-step explanation:
hope this helps
 
        
                    
             
        
        
        
Triple t ⇒ 3t
add the result to u ⇒ 3t + u
multiply what you have by v ⇒ (3t + u)v
Since it is instructed not to simplify, we perform the distributive property of multiplication.
(3t + u)v = 3tv + uv
        
             
        
        
        
Answer:
First question the answer is the third one, 4*4*4*4*4
Second: Part A 
I think one side is 25 yards, so answer is 25². that makes the area of the chicken pen  to be 625 sqaure yards.
Part B a yard is exactly three feet, so the power becomes 75², and the area is 5625 square feet.
third question: not sure what the only use once is, but 2^4 and 4² could be the first one, they both equal 16. The second could be 3^4 and 9^2, which are both 81.