Can someone help me out a little I got confused when it said what is the slope of the line.

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.

Plz hurry evaluate the expression a+b where a=8 and b=19

Which graph represents the linear function below? y-4= (4/3)(x-2)