Question

Which expression can be used to determine the number of people who can sit as a group if y tables

Answer 1

Answer:

c) 2(2y+1)

Step-by-step explanation:

This is because when the tables are together there can be 4 people at each table, plus 1 at either end. Whatever equation you have must have +2 in it, to account for the ends of the tables. The number of tables (y) must be multiplied by 4 because there are always 4 people per table. The number of tables is unknown so 4y must be in your equation.

2(2y+1) simplifies to 4y+2, which is the equation we want.