Answer:
2.35 miles
Step-by-step explanation:
 
        
             
        
        
        
I genuinely don't know what the point is of the table, where do you use it for?
        
             
        
        
        
Part 2 is 12.5 cm represents 5km
I worked this out by doing a ratio
5cm=2km
?cm=5km
you have to do 2 times 2.5 to get 5km so you do 5 times 2.5 to get 12.5cm 
so the answer is that 12.5cm
        
             
        
        
        
Step-by-step explanation:
Next term is - 51
Use formula Tn=a+(n-1)d
a=the first term of the sequence which is - 15
d=the difference between the terms which is - 9
Substitute 
Tn=-15+(n-1)(-9)
Tn=-15+9-9n
Tn=-9n-6
From this you will be able to generate all the terms in the pattern 
If they say determine the 50th term just substitute 50 by n 
Tn=-9(50)-6
Tn=-450-6
Tn=-456
 
        
             
        
        
        
21/30 simplifies to 2.1/3 so it's a little bit bigger