Given the recursive formula, each terms is five time the previous one.
This means that:
is 5 times 
, which means 
- in turn, is 5 times
, so we have 
. This means that 
- Finally,
So, substituting this back gives
In general, since you have 
, each time you compute a new term you multiply by a factor of 5, so if 
, you have
Answer:
the first one since it shows all the lines being equal and therefore making the angles equal
He sold 4 loaves of bread
Start with
Add 2 to both sides:
Divide both sides by 7:
Which is true if
If we choose the positive alternative, we have
Otherwise, we have
