Answer:
$130 
$100 + $6w
Explanation:
By question , Tariq had $100 . In one week he can save , $6 . So in 5 weeks he will save , 
=> $6 × 5 
=> $ 30 .
Therefore after 5 weeks he will have , 
=> $ 100 + $ 30 
=> $ 130 .
- If the number of weeks is w, then , the expression would be , 
 
=> $100 + $6w
Therefore after 5 weeks he will have $130 and the expression would be , $100 + $6w.