2.7 billion miles away (4.3 billion kilometers apart)
Answer:
1) a) 
, b) 
, c) 
.
2) a) 
, b) 
, c) 
.
Explanation:
The scale factor is defined by the following expression:
(1)
Where:
- Scale factor.
- Scale distance, in centimetres.
- Real distance, in centimetres.
1) If we know that 
, 
, 
and 
, then the actual distances in metres are:
2) If we know that , 
, 
and 
, then the actual distance in kilometres is:
Challenges for growing crops are you don't know if it will be successful, you have to have enough water, the dirt has to be fertile, and the weather may affect how the plant grows.
