Becky is using the expression 2z + 3 to represent the number of chairs in her classroom. There are twice as many chairs as table
s, and there are three extra chairs in the back. What does z represent? The number of chairs.
The number of tables.
The number of chairs at tables.
The number of chairs and tables.
Sens there is twice as many chairs as tables, the number 2 represents the chairs. The 3 represents the 3 extra chairs in the back. so the only logical object to represent z is the number of tables.
