X=⁻3 and x=1
because 
a+b=2 which means a=3 and b=⁻1 which added up equals 2
a×b=⁻22 which means that 11 which is a×⁻2 which is b=⁻22
        
             
        
        
        
Answer:
The length of a pen.
Step-by-step explanation:
A length of a pen is around three inches and is reasonable but all of the others are way too big and can be measured in feet or miles.
 
        
             
        
        
        
Answer:
C.  238π  cm^3.
Step-by-step explanation:
Surface area = 2 * area of the circular ends + area of the curved length
= 2π r^2 + 2π r* l
= 2 π 7^2 + 2π 7 * 10
= 98π + 140π 
= 238π  cm^3.
 
        
                    
             
        
        
        
To rewrite it as a single exponent we have to simply add the exponents since we have an equal base.
The answer is 9^7