Answer:
[tex]400-10w[/tex].
Step-by-step explanation:
Let w represent the number of weeks.
We are supposed to write an expression for the given word phrase.
Since the with-drawl amount is $10 per week, so amount withdrawn in w weeks would be [tex]10w[/tex].
The amount left after w weeks would be $400 minus [tex]10w[/tex].
Therefore, our required expression would be [tex]400-10w[/tex].
