I think this a linear function. The graph has a constant flow of going up. In other words, it is linear.
 
        
             
        
        
        
Answer:
0.002
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
   750 < p < 1500
Step-by-step explanation:
The total cost of the affair for p attendees is ...
   750 +2.25p
The average cost is that number divided by p. The answer choices suggest that "between" means that the cost per person cannot be 2.75 or 3.25. Applying the limits to the average cost, we get ...
   2.75 < (750 +2.25p)/p < 3.25
   2.75 < 750/p + 2.25 < 3.25 . . . . . . . . separating the fraction parts
   0.50 < 750/p < 1.00 . . . . . . . . . . . . . . subtract 2.25
   2 > p/750 > 1 . . . . . . . . . . . . . . . . . . . . . take the reciprocal*
   1500 > p > 750 . . . . . . . . matches choice 4
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* Taking the reciprocals of numbers with the same sign reverses their order:
   2 < 3   but   1/2 > 1/3
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An alternate approach to the solution would be to multiply by p:
   0.50p < 750 < 1.00p
To solve this requires it be made into two inequalities:
   0.50p < 750   ⇒   p < 1500
and 
   750 < 1.00p   ⇒   750 < p
Then these would need to be recombined to form the answer:
   750 < p < 1500
 
        
             
        
        
        
R=-6
Mark brainliest please 
Hope this helps you
        
             
        
        
        
Answer:
I don't know about 4 but of no. 6, it is A
Step-by-step explanation: