785.63-(57+125)
=785.63-182
=603.63
603.63+57.25=$660.87
        
             
        
        
        
Answer:
c = F-32; 68-32 = 36°C.
Step-by-step explanation:
the real conversation equation is f = 9/5 C + 32. but for the sake of this problem we are ignoring the coefficient.
so it's 36°C
 
        
             
        
        
        
Answer:
The high school graduating class changed by approximately 23%
Step-by-step explanation:
we have
The high school graduating class of 2010 was 260 people
Five years later the high school graduating class was 320 people.
we know that
260 people represent the 100% 
so
The difference is (320-260)=60 people
using proportion
Find out what percentage represent 60 people 
Let
x ----> the percentage that represent 60 people

therefore
The high school graduating class changed by approximately 23%
 
        
             
        
        
        
F(2) = g(-2)
hope this helped :)
        
                    
             
        
        
        
Step-by-step explanation:
You're asking why 

let's transpose the first equation for y
-2x-6y=18
-6y=18+2x
6y=-18-2x
y=-18/6-2x/6
y=-3-⅓x as required