Answer:
The real solution is  .
.
Step-by-step explanation:
 while
 while 
So the equation becomes:



We know that  . So let's see what
. So let's see what  gives us:
 gives us:
 .
.
 is the result we wanted.
  is the result we wanted.
 is therefore a solution.
 is therefore a solution. 
 
        
             
        
        
        
Answer: you will need approximately 23 grams
Step-by-step explanation: but thats approximately
 
        
             
        
        
        
They are using the point (2, 8) to write this equation.  You know that because of the "y-8" in the equation, and also because it's bolded! lol.  Anyways, what's missing is the slope and the x value from our point.  The slope is -2.  Find this by picking 2 points on the line and putting those into the slope equation.  Use the bolded point and the x-intercept: (2,8) and (6,0):

.  As stated earlier the x coordinate in the bolded point is 2.  So our equation is y-8=-2(x-2).  And there you Go!
 
        
        
        
Answer:
0
Step-by-step explanation:
10(x-2)=-20
10x-20=-20
10x=0
x=0
 
        
             
        
        
        
We can explicitly find the inverse. If  is the inverse of
 is the inverse of  , then
, then

Solve for the inverse :






Then when x = -6, we have

Alternatively, we can first solve for x such that  . Then taking the inverse of both sides,
. Then taking the inverse of both sides,  . (The difference in this method is that we don't compute the inverse for all x.)
. (The difference in this method is that we don't compute the inverse for all x.)
We have




