53×0.2 = 10.6
53×0.06= 3.18
53+3.18+10.6= 66.78
So the answer is $66.78 / number 2
  
        
             
        
        
        
Answer: C) All real values of x such that 
In other words, x must be 0 or smaller.
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Explanation:
The reason why is because we must make the stuff under the square root to never be negative. We must make -2x be 0 or larger.
So,

As an example, if x = -2, then -2x = -2(-2) = 4 is positive. Applying the square root to a positive number is valid.
But if x = 5, then -2x = -2*5 = -10 is under the square root, which is not allowed.
 
        
             
        
        
        
Answer:
option 1
Step-by-step explanation:
temperature of 76.1°F converted to Celsius
 
        
             
        
        
        
Marcia: 1.5 meters tall / 2 meters long shadow
Building: unknown height / 24 meters long shadow
So 1.5/2 = x/24
You can cross multiply: 2x = 36
Divide: x = 18
So your answer is C).
        
             
        
        
        
Answer:
x=9
Step-by-step explanation: