When we have negative exponents, we can move the term with the exponent to the bottom of the fraction. This is also known as multiplying by the reciprocal (and changing the negative exponent to be positive!).
The reciprocal of z^-3 would be 1 / z^3. 
Hope this helps!! :)
 
        
             
        
        
        
I'm pretty sure you're right. I got B to be the answer alsooo. Good job.
Have a good day! :D
        
             
        
        
        
Answer:
For the L shaped thing, the area is 224 ft^2
Step-by-step explanation:
18*(18-10) + 10*(18-10) = 224
Just requires some visualizing :) Hope this helps <3
 
        
                    
             
        
        
        
Answer:
X > -4
Step-by-step explanation:
Collect the like terms which literally leaves you with -x<4
Then just changes the signs, hence the answer.
Please mark brainliest!
 
        
             
        
        
        
Answer: 3
3,000,000,000
Step-by-step explanation:
Billions have 9 zeros