A. If you're adding numbers with exponents with the same base, keep the same base and add the values of the exponents together. 
3^2 * 3^4 = 3^(2+4) = 3^6
        
             
        
        
        
I would say B , even though I’m only in 5 th grade
        
             
        
        
        
Answer:
Step-by-step explanation: 
You need to add $6.50 and $11.75 and you get $18.25.
 
        
                    
             
        
        
        
Ok so in order to find the answer to this problem we are going to Multiply 

 and 

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72 is the length d of how deep end in feet}