Answer:
£13,831.72
Step-by-step explanation:
 
        
             
        
        
        
In 13, x=27.496
In 14, x=16.824
In 15, x=51.34° 
<em />I did this in my head; it would take longer to write it out. I'll show you the trig if need be.
        
             
        
        
        
Answer:
The quiz grades for class 1 have more variability than the quiz grades for class 2.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
C
Step-by-step explanation:
For the given intervals
( - ∞, - 5) ← use any value < - 5 but not - 5, the parenthesis ) indicates that x is less than - 5 but not equal to - 5
(- 5, - 1) ← - 4, - 3, - 2 can be used but not - 5 or - 1
(- 1, 4) ← 0, 1, 2, 3 can be used but not - 1 or 4
(4, ∞ ) ← use any value > 4 but not 4
Hence
3 can be used in (- 1, 4)
- 6 can be used in (- ∞, - 5)
zero can be used in (- 1, 4)
- 5 cannot be used in any of the given intervals
 
        
             
        
        
        
Answer:
282.74
Step-by-step explanation: