Answer:
11
Step-by-step explanation:
A11
 
        
             
        
        
        
Answer:
If something is "to the power of 15" then it means it is multiplied by itself 14 times (one less than 15 as the original number is already to the power of 1).
An example:
So 2 to the power of 15, which we write as 215 = 2 * 2 * 2 * 2 etc... (so we have 15 written 2's in total meaning we will make 14 multiplications) is equal to 32,768.
 
        
             
        
        
        
Answer:
B.
Step-by-step explanation:
Causation is often confused with correlation because they are so similar. B would mean that pollution is caused from something (lets say greenhouse gases for example) which then results in more cases of heart disease.
Causation is when the first variable may bring the second into existence or may cause the incidence of the second variable to fluctuate. So, causation is the capacity of one variable to influence another. Which, would make B, a suitable candidate.
 
        
             
        
        
        
Answer:
15 or 20 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Mark drove 4 hours 
Mary drove 6 hours 
Step-by-step explanation: