Vertex form is   f(x) = a(x - b)^2 + c    where the vertex is (b, c) and a is some constant.
So for the first part we have  f(x) = a(x + 6)^2 - 1
for root -9:-  a( -9+6)^2 - 1 = 0
9a - 1 = 0 , a = 1/9
The other 3 are derived in the same way.
so required equation is f(x) = (1/9)(x + 6)^2 - 1
        
             
        
        
        
Greater than 5.4 i hate the 20 characters rule
        
                    
             
        
        
        
Answer:
   The product is approximately 5400.
Step-by-step explanation:
   9 1/16 rounded to the nearest whole number is 9.
   645 3/5 rounded to the nearest hundred is 600.
Multiplying these values gives a product of 9·600 = 5400.
The product is approximately 5400.
 
        
                    
             
        
        
        
Answer:
17
Step-by-step explanation:
Saying 25+ -8 is basically saying 25-8, and since 25 is the bigger number and it's positive, you get positive 17
 
        
                    
             
        
        
        
Answer:
a. The average is  =(++) .
b. He can use the formula  =−− q sub 3 , equals 3 x minus , q sub 1 , minus , q sub 2. He will need a score of  =()−−= q sub 3 , equals 3 open 90 close minus 85 minus 88 equals 97 on his third quiz.
Step-by-step explanation: