Answer:
idk the answer but i use socratic by google to take pictures of the problems and find answers online, and also cymath.com is a really great place to get answers for math, i hope this helps!
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
y+8=-2(x-4) 
Step-by-step explanation:
point-slope form is y-y1=m(x-x1) where m is the slope, and (x1,y1) is a point.
We are given all of that information: 
slope: -2
point: (4,-8)
substitute the numbers into the equation
y--8=-2(x-4)
we can make --8 to positive 8
so: 
y+8=-2(x-4)
this is the equation in point-slope form
Hope this helps! 
 
        
             
        
        
        
First calculate the area of the pool, which is 15 x 15, = 225 sq meter, 
and just multiply the cost for each sq meter by the area, 
17.5 x 225
therefore the cost will be $3937.5
        
                    
             
        
        
        
Earning is positive so the purpose of 0 would be to have $0 or no money