From 8.30 pm to 12 : 00
Difference = 12 : 00 - 08:30 = 3 : 30 
3 hours 30 minutes = 3.5 hours.
Total for those hours = 3.5 * 1000 = $3500
From 12:00 to 1:00 am  = 1 hour.
50% increase =  50% of 1000 = .50 * 1000 = 500
So it will increase to 1000 + 500 = $1500 per hour.
For the 1 hour extra, 1 * 1500 = $1500
Total = $3500 + $1500 = $5000
She will be paid $5000
        
             
        
        
        
The appropriate choice is
  Polynomial B. -3x⁴ +5x³ +5
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C and D are not trinomials. (They have 4 terms, not 3.) A is 5th degree, not 4th.
        
             
        
        
        
98%
Hope this helps you :)