Use the Creating Trains interactive to make a train that has at least 8 cars. The table shows the types of cars that you can use to make your train.

Write two different expressions that represent the length of your train. Use the letters specified in the table to represent the lengths of the different types of cars.

Find the length of your train by replacing the letters in each of your expressions with the values given for each letter in the table. INTERACTIVE: Creating Trains

Hint:

Did you make a train and write an expression for the train?

Did you replace each variable in the expression with the appropriate car length from the table?

Once you complete these steps, you can calculate the length of the train.