Mr. Hernandez opened a flower shop. He took a random survey by asking every 5th customer to find out their favorite flower. Who is the sample? all the customers
every 5th customer
all the flowers
all the people in the town

sample: every 5th customer

Hope this helps!!!

Note the equation/formula:
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         d * r = t  ;
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  in which:  
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        d = distance = 84 ft.
        r  = rate = 12 ft / sec
        t  = time = ?
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To find the "time" we can rearrange the equation:
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       d = r * t  ;   
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   Divide EACH SIDE of the equation by "r" ;  to isolation "t" on one side of the equation; to create an expression to find the time for the given distance and rate; which we will then do by plugging in our given values for "d" (distance) and "r" (rate) ;
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     d / r = (r * t) / r ;  
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 to get :   d / r = t ; 
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         ↔   t = d / r  ;
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Now, plug in our given values for "d" and "r" ; to solve for "t" ;
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        →    t = 84 ft / (12 ft / sec) ; 
   
                  =  84 ft   ÷    ;
    
                  =  84 ft  *   ;
  
                  =  {   }  sec. ;
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                    →   t    =   7 sec.   {that is;  "7 seconds" }.
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