Answer:
There will be 31,304 trays of cookies in 43 days.
Step-by-step explanation:
728 = 1 day
728 x 43 = 31,304
 
        
             
        
        
        
To find percent, you take 91 and divide it by 99.2 then multiply by 100. 
(91/99.2) × 100 = 91.92%
        
             
        
        
        
The probability of 3 failures or less is about 0.83886, so that is the probability the machine will be working.
 
        
        
        
I ain’t never seen two pretty best friends
        
             
        
        
        
3(x + 7) = 9(x - 1)
3(x) + 3(7) = 9(x) - 9(1)
  3x + 21 = 9x - 9
<u>- 3x          - 3x     </u>
          21 = 3x - 9
        <u>+ 9         + 9</u>
         <u>30</u> = <u>3x</u>
          3      3
         10 = x