Answer:
10x^3+9x^2-9
Step-by-step explanation:
8x^3+2x-2+9x^2-7+2x-2x^3 - Combine like terms
10x^3+9x^2-9
 
        
                    
             
        
        
        
Answer:
Domain: All numbers greater than or equal to 0. By definition, the domain of a graph, is the possible x values. 
Range: All real numbers. By definition, the range is all possible x values. 
Not a function. A function has y value for every x value.
 
        
             
        
        
        
Answer:
5 (strawberries / hours)
Step-by-step explanation:
calculation fro morning 
strawberries / minutes  x   minutes / hours =   strawberries / hours 
  so after adding the value in above equation
3/4* 60/1  = 45 strawberries / hours
 calculation in the afternoon
strawberries / minutes  x   minutes / hours =   strawberries / hours
 2/3 x 60/1  =  40 strawberries / hours
  so now by calculating difference between morning and afternoon packing rates,  you can easily calculate 
 45-40 = 5 (strawberries / hours)
 
        
             
        
        
        
Do rise over run and you should end up with 4 and 3 hope that help