Answer:
D
Step-by-step explanation:
Using the rule of radicals
 =
 = 
 ×
 ×  ⇔
 ⇔ 
Given
 ×
 × 
=  ×
 × 
=  ×
 × 
Cancel  on numerator/ denominator
 on numerator/ denominator
=  ×
 × 
=  ×
 × 
Cancel  on numerator/ denominator, leaving
 on numerator/ denominator, leaving
=  → D
 → D
 
        
             
        
        
        
ANSWER
C. 7
EXPLANATION
We want to evaluate

We use the order of operations PEDMAS.
Dealing with the parenthesis first,we have

Note that:

and

Our expression now becomes:

Next, we add to get:

We finally subtract to get,

The correct answer is C
 
        
                    
             
        
        
        
Answer:
Non proportional
Step-by-step explanation:
y = mx = proportional
y = mx + b = non proportional
y = mx + b
y = 9/3x + b = non proportional
Hope that helps!