Which expression can be used to determine the number of people who can sit as a group if y tables
are joined to form 1 long table? Justify in words why your answer is correct.
a) 4(y + 1)
b) 369 + 1)
c) 2(2y + 1)
d) 6y

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.

Which expression can be used to determine the number of people who can sit as a group if y tables are joined to form 1 long table? Justify in words why your answer is correct. a) 4(y + 1) b) 369 + 1) c) 2(2y + 1) d) 6y

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Which expression can be used to determine the number of people who can sit as a group if y tables
are joined to form 1 long table? Justify in words why your answer is correct.
a) 4(y + 1)
b) 369 + 1)
c) 2(2y + 1)
d) 6y