Answer:
the number is 5 
Step-by-step explanation:
x^10 ÷ x^7 = 125
x^3 = 125
x = 5
 
        
             
        
        
        
Answer:
the answer is A
Step-by-step explanation:
 
        
             
        
        
        
Answer:

Given:
f(x) = 3x - 1
g(x) = x + 2
To Find:
(f - g)(x) 
Step-by-step explanation:

 
        
             
        
        
        
Answer:
Unknown number, x=-4
Step-by-step explanation:
Forming the equation from the information provided above.  
9=2x+17
If we solve for the unknown number, we first collect like terms together.
2x=9-17
2x=-8
Divide both sides of the equal sign by 2 the coefficient of x
x=-4