Daniel wants to buy a model car and race track with his allowance. He has $30 to spend. The model car costs $8.50, and he will spend the rest of the money on pieces of race track. EAch piece of race track costs $2.15. Answer the following questions to find the number of race track pieces he can buy. Part 1: Define the variable.
Part 2: Write an equation to find the number of race track pieces he can buy.
Part 3: Solve the equation and write only your answer below.
Part 4: Explain how you solved the equation. (Write in complete sentences.)