Answer
Tick ? Wym
Explanation
Answer:
16 weeks
Step-by-step explanation:
85 divided by 5 is 17. Take away one week for the $5 he already has. So you get 16 weeks.
Hope this helps you!
Answer:
See below
Step-by-step explanation:

Considering

Once the derivative of a constant is 1 and 
Then,

Therefore,
