Answer:
For the first one on the left, you need to evaluate the expressions inside the parenthesis. For Question number 6, evaluate the exponent first.
Step-by-step explanation:
Think of PEMDAS, order of operations.
Parenthesis
Exponent
Multiplication 
Division
Addition
Subtraction
 
        
             
        
        
        
The function is graphed as shown below
Part A:
We use the formula 

 to find the vertex of the function. A quadratic function of the form of 

 and equating this form to the given function 

, we have

 and 

.
Substituting 

 and 

 into the vertex formula, we have

, as shown in the graph 
This calculation means that the highest profit is achieved when the number of photo printed equals to ten photos
Part B:
We can find solution to this equation by factorising





 and 

, as shown in the graph
The two values means that the company makes no profit when they either produce 5 or 15 photos
 
        
        
        
N=12-2 is the answer of this question
        
             
        
        
        
this picture would help you man stay strong
 
        
             
        
        
        
Answer:
7
Step-by-step explanation:
9/m+4
9/3+4 (m=3)
3+4
7