Answer:(x+2)(x−2)
Step-by-step explanation:Since both terms are perfect squares, factor using the difference of squares formula
 
        
             
        
        
        
Answer:
Since there is a curve, I believe it is a function. 
 
        
             
        
        
        
Answer:
b= -9
( I hope this was helpful) >;D 
 
        
                    
             
        
        
        
PQ = 40 inches
The answer is C
        
             
        
        
        
Based on the above, the interval will their systolic pressure be lowest is 4pm to 5pm.
<h3>What is the interval about?</h3>
From the function given above, the lowest systolic pression can be seen from 5 and 8 hours after taken the medication.
Therefore, this will fall into or between the interval of  2pm to 5pm.
And as such,  looking at the question, the option that best fit into this time range is 4pm to 5pm.
Therefore,  Based on the above, the interval will their systolic pressure be lowest is 4pm to 5pm.
Learn more about Interval from
brainly.com/question/479532
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