What value makes the expression equivalent 6 (3x + 5) and 15x + □ + 3x

1. 5
2. 11
3. 15
4. 30​

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 the inverse of the function f(x) = 2x + 1?

Abox holds 500 paperclips. after a week on the teacher's desk 239 paperclips remained. how many paperclips were used?