Narrowing it down it's either a or c because the other 2 choices open downward (negative a).
Graphing the 2 parabolas choice c is narrower.
c
        
             
        
        
        
Answer:
a) -10
b) 7
Step-by-step explanation:
a) 



b) 




 
        
                    
             
        
        
        
Answer:
23 17 31
Step-by-step explanation:
igotitright
 
        
             
        
        
        
Answer:
2 3/6
Step-by-step explanation:
You must turn 1 2/3 and 1 1/2 into improper fractions. You then multiply them and get an answer of 15/6, but since 6 can go into 15 twice (6x2=12+3=15), you get a whole of 2 and 3/6.
 
        
             
        
        
        
You are correct the answer is a:18