Answer:
I'm pretty sure the answer is -a²b and 5a²b
Step-by-step explanation:
 
        
             
        
        
        
Answer:
5
Step-by-step explanation:
Just grap any two consecutive terms in the sequence. lets say -55 and -50
-50-(-55) = 5
you can check this by picking two other terms
 
        
             
        
        
        
Answer: 8%
Step-by-step explanation:The shipping and handling fee of $35 was applied to the order or $437.50.
Divide the total by the shipping and handling fee:
35 / 437.50 = .08
Multiply by 100 to get percent:
.08 x 100 = 8%
 
        
             
        
        
        
Answer:
x = 7
Step-by-step explanation:
Similar figures have sides that are proportional.  Setting up a proportion for the sides of the figures will help solve for 'x': 

Cross-multiply:  3(x + 1) = 6(x - 3) 
Distribute:  3x + 3 = 6x - 18 
Combine like terms:  21 = 3x 
Solve for 'x':  x = 7
 
        
             
        
        
        
Assuming that an exponentiation sign is missing, all you need to know is that rational exponents work like this:
![a^{\frac{b}{c}}=\sqrt[c]{a^b}](https://tex.z-dn.net/?f=a%5E%7B%5Cfrac%7Bb%7D%7Bc%7D%7D%3D%5Csqrt%5Bc%5D%7Ba%5Eb%7D)
So, you have

And similarly,
![81^{\frac{7}{4}}=\sqrt[4]{25^7}=\sqrt[4]{(3^4)^7}=3^7](https://tex.z-dn.net/?f=81%5E%7B%5Cfrac%7B7%7D%7B4%7D%7D%3D%5Csqrt%5B4%5D%7B25%5E7%7D%3D%5Csqrt%5B4%5D%7B%283%5E4%29%5E7%7D%3D3%5E7)