Explanation:
1. Identify the different constellations of variables. Here there are three:
2. Combine coefficients of each of the different variable constellations:
   (8.1 -2.8)b +(6.7 +0.9)a +(2.5 +7)
   5.3b +7.8a +9.5
3. Perform any other operations that might be required depending on the sort of equivalent wanted. For example, one could write ...
   5.3(b +(78/53)a) +9.5 . . . . . . . shows the weight of a relative to b
 
        
             
        
        
        
Answer:
Step-by-step explanation:
the 30 year olds are more likely to pick chocolate as their favorite ice cream because the fraction of people who like chocolate is 14/20 where the other 3 are 4/20 and 2/20. this can be converted into percentages as well by multipling by 5. 70% of people who are in their 30s like chocolate opposed to the 20% and 10%.
 
        
             
        
        
        
The answer is A) The student failed to properly apply the distributive property.