I need help quick I attached the pictures of the questions down below.

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days