Answer:
Expression for each situation:
Given, On Monday it snowed a certain amount.
Let the amount of snow on Monday be n.
On Tuesday it snowed 3 times as much as Monday.
Then,
amount of snow on Tuesday = 3 x n = 3n
On Wednesday it snowed twice as much as Monday.
Then,
amount of snow on Wednesday = 2 x n = 2n
On Thursday it snowed the same amount as Monday,
Then, amount of snow on Thursday = amount of snow on Monday
amount of snow on Thursday = n
Hence, we have written expressions for each situation.