Answer:
(2, -3)
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
15a^5b^15
Step-by-step explanation:
you multiply 5 and 3 to get 15, and then when you are multiplying exponents of variables, you actually add them, so a^2 times a^3 is actually a^5, and b^7 times b^8 is b^15. Because these are all multiplied together, you get the answer of 15a^5b^15.
 
        
                    
             
        
        
        
I don’t know if this correct or not but I think it’s 1,666
        
             
        
        
        
4. 20 minutes
Explanation- It's the only answer with "minutes" as an answer.