Answer:
Supplimentry 
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Answer:Number Sets. There are sets of numbers that are used so often they have special names and symbols: ... The numbers you can make by dividing one integer by another (but not dividing by zero). In other words ... If you square a real number you always get a positive, or zero, result. ... x + 7 = 0, x = −7, Integers, set integer.
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Answer:
18
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It's not necessary that either one represents a proportional
relationship.  But if either one does, then the other one doesn't.  
They can't both represent such a relationship.
The graph of a proportional relationship must go through
the origin.  If one of a pair of parallel lines goes through
the origin, then the other one doesn't. (If two parallel lines
both went through the origin, then they would both be the 
same line.)
        
                    
             
        
        
        
The only thing you should do is to multiply 7 by 2x and 10. 
so you will have: (7*2x) + (7*10) = 14x + 70 :)))
i hope this is helpful 
have a nice day