To decrease something at 100% by 7% is: 
100% - 7% = 93% 
You multiply the original value by 0.93 to decrease it from it's original value by 7% 
 
        
             
        
        
        
Answer:
x=4 y=1 or (4,1)
Step-by-step explanation:
 
        
             
        
        
        
The location  AC + CB  is  mathematically given as 
AC + CB= AB
This is further explained below.
<h3>What is the location  AC + CB of  AB ?</h3>
Because point C can be seen to be in between A and point B, the equation AC + CB must equal AB. 
It is important to keep in mind that point C may be located in any part of the space between A and B; yet, the solution will still be considered to be AB in this scenario.
Again, AC + CB = AB.
In conclusion, By way of deduction: if point C is located between points A and B, then it follows that point C is situated on line AB conversely, if point C is not situated on line AB, then it cannot be located between points A and B. As a result, you are able to deduce that AB is a line and that point C is situated on it in the middle of points A and B.
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I believe what your asking is just multiplying it together so 5p(p-3) would be 5p2-15p. the p2 is p squared or a little 2 on top of the p. Hope I helped! 
        
             
        
        
        
There are many factors, it is all a matter of preference, normally, you want to try to solve for the easiest one to get to 
example
if y ou had
(x-3)^2+y=9
you would solve for y becuase it is less tricky
it is all a matter of preference