Robin has to go shopping for her brother's birthday. 
She already bought "x" presents for him. 
The next day, Robin bought "2" more presents for him just in time for his birthday.
 When she got home and celebrated his birthday, her beother opened, in total, "9" presents. 
--- What is the number of presents that Robin had originally purchased? ---
        
             
        
        
        
Answer:
Note that both relations and functions have domains and ranges. The domain is the set of all first elements of ordered pairs (x-coordinates). The range is the set of all second elements of ordered pairs (y-coordinates). Only the elements "used" by the relation or function constitute the range.
 
        
             
        
        
        
Answer:
Option 2 - Approximately 24–36 pounds
Step-by-step explanation:
Given : A standard American Eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. Assuming the weights of standard Eskimo dogs are normally distributed.
To find : What range of weights would 99.7% of the dogs have?
Solution : 
The range of 99.7% will lie between the mean ± 3 standard deviations.
We have given,
Mean weight of Eskimo dogs is  
 
Standard deviation of Eskimo dogs is  
 
The range of weights would 99.7% of the dogs have,





Therefore, The range is approximately, 24 - 36 pounds.
So, Option 2 is correct.
 
        
             
        
        
        
Answer:96
Multiply 3x4 and 2x3 which gives you 12 and 8 then you multiply those and you get 96.