Answer:
Step-by-step explanation:
1.  Move the 6 to the other side:   x^2 +4x                        =6
2.  Square half the coefficient of the x term:  (4/2)^2 = 4
3.  Add this 4, and then subtract this 4, from x^2 + 4x:
      x^2 +4x + 4 - 4                       =6
4.  Rewrite this perfect square as the square of a binomial:
       (x + 2)^2   -   4   = 6
5.  Add 4 to both sides:    (x + 2)^2 =  10
6.  Find the sqrt of both sides:  x + 2 = √
 
        
             
        
        
        
Answer:
that is a long story
Step-by-step explanation:
 
        
             
        
        
        
Which one the first three???
        
             
        
        
        
The function that models the graph is given as:
<h3>What is an 
equation?</h3>
An equation is an expression that shows the relationship between two or more numbers and variables.
The equation shown in the graph represents a piecewise function. Hence:
From the line through the point (-8, 4) and (-2, 2), the equation is f(x) = -(1/3)x + 4/3
From the curve through the point (-2, 2) and (0, 6), the equation is f(x) = -x² + 6
From the line through the point (0, 6) and (4, 6), the equation is f(x) = -6
From the line through the point (4, 6) and (7, 9), the equation is f(x) = x + 2
The function that models the graph is given as:
Find out more on equation at: brainly.com/question/2972832
#SPJ1
 
        
             
        
        
        
Answer:
Mark’s method is correct, because even though it is impossible to deliver mail to 1.2 houses in a minute, 1.2 represents the unit rate of houses per minute.
Step-by-step explanation:
Just took the test.