1. Writing p as a function of c gives
P =2c-250
Where C is the number of candy bar
P is the number of candy bar sold. 
2. This is expressed as
 0 =< C <= 250
3. This is expressed as
 0 =< C =< 250
4. Amount made from selling candy bar in the set of interger between 0 to 500
C is given as 500
From the equation P=2C-250
P=2×500-250
P=1000-250 =750. 
P=750
5. Amount made selling candy bar for the set of real numbers between 0 and 250
C is equal to 250
From the equation, we have
P=2×250-250
P=500-250 =250. 
 
        
             
        
        
        
Answer:
C, the set of all possible output values
Step-by-step explanation:
Range = Output 
 
        
                    
             
        
        
        
Edited answer: The number is:  "- 6" .
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 8 (8 + x) = 16 ;  
in which "x" represents the number for which to be solved ;
8*8 + 8*x = 16 .
Edit:  64 + 8x = 16 ;
Subtract "64" from each side of the equation:
Edit:   64 + 8x − 64 = 16 <span>− 64 ;
to get:  8x = </span>- 48 ;
Divide EACH SIDE of the equation by "8" ; to isolate "x" on one side of the <span>equation ; and</span> to solve for "x" ;
Edit:     8x / 8 = -48 / 8 ; 
  Edit:    x = - 6 .
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The number is:  "- 6" .
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 Let us check our answer, by plugging in "-6" for "x" in the original equation:
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8 (8 + x) = 16 ; 
→ 8 [8 + (-6) ]  =? 16 ?? ; 
→ 8 (8 − 6 )  =? 16 ?? ; 
→ 8 (2)  =? 16 ?? ; 
→ 16 = ? 16 ??  Yes!
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Answer:
MU/P has decreased and Callum should buy less of the good.
Step-by-step explanation:
 
        
             
        
        
        
<span>twice the sum of a number and seven is 8
 2(x+7)=8</span>