Answer:
- (3)
 - (4)
 - (4)
 - (2)
 
Explanation:
1. 
7 > 0.7 > 0.07 > 0.007
2. 
5h - 15hg 
taking 5h common 
5h (1 - 3g) 
3. 
5(2x- 1) = 35 
dividing both sides by 5 
2x - 1 = 7 
2x = 7 + 1
2x = 8 
x = 4
4. 
if x is an odd number x + 2 will also be odd. 
for example
11 is an odd number 
on adding 2 we get 13 which is also an odd number.