Some students are keeping track of how much money they earn and spend in one week. Use the table below to answer the following questions. Activity Money earned or spent (in dollars) Hourly pay $14$ Weekly allowance $21$ Buy dinner $-12$ Ride the bus $-2.50$ Part A If Kevin gets paid for $3$ hours, gets $1$ weekly allowance, rides the bus $6$ times, and has $0$ dollars at the end of the week, how many times did he buy dinner? Justify your answer. Respond in the space provided.