Omar is collecting toy cars. He starts his collection with 2 toy cars that his grandmother gave him. He plans to buy cars each week using hi

Omar is collecting toy cars. He starts his collection with 2 toy cars that his grandmother gave him. He plans to buy cars each week using his allowance. The table below shows the number of cars that Omar has and can be modeled by an arithmetic sequence. Write an equation to help Omar determine how many cars he would have each week.