It's C.  In order to be in standard form you have to have all your exponents in descending order.  They don't all have to be there in order, the ones that are just have to go from highest to lowest.
        
                    
             
        
        
        
Answer:
(8 * x) + 2x = 60
8x + 2x = 60
10x = 60
/10   /10
x = 6
8 is a constant that is being multiplied by an unknown number which we will name x. It is then being added to two times the unknown number(x), so we multiply x by 2, which is 2x. The final product will be 60, so in the equation it'll then equal 60.
We consider "a number" to be a variable that withholds an unknown value, which is x (or any other variable you prefer).
 
        
                    
             
        
        
        
Answer:
27
Step-by-step explanation:
22
24
25
26
27 - middle AKA median.
28
28
29
36