Hello! 
I believe the answers are:
A) The vertex is (1, −6) 
C) The graph has a minimum.
I hope it helps!
 
        
                    
             
        
        
        
Answer: Yes!
Step-by-step explanation:
Yes, graphite is composed of 100%carbon. With this, can we say that graphite is an element or compound of carbon? Compound is composed of two or more elements combined in a substance in definite proportions, in the form of molecules held together by chemical bonds.
 
        
             
        
        
        
Answer:
0.78 euros per dollar 
Step-by-step explanation:
If 35 euros=$45.00, then every dollar that he has is equivalent to (35/45) euros=35/45=0.78 euros per dollar
(I found the answer from Nonicorp1 on Brainly)
 
        
             
        
        
        
Answer:
D (4,2)
Step-by-step explanation:
you just change the y value to the opposite sign hehe
 
        
             
        
        
        
Given that 
the weight of football players is distributed with a mean of 200 pounds and a standard deviation of 25 pounds.
And we need to find What is the minimum weight of the middle 95% of the players?
Explanation - 
 Using the Empirical Rule, 95% of the distribution will fall within 2 times of the standard deviation from the mean.
Two standard deviations = 2 x 25 pounds = 50 pounds
So the minimum weight = 200 pounds - 50 pounds = 150 pounds
Hence the final answer is 150 pounds.