Write an expression equivalent to "the quotient of a number and 5 plus 2"

What is the slope of a line that is perpendicular to y = 3x + 1

Which is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

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.