Please help i'm only in 5th grade

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.

What is best way to getting answer for my exam is

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?