A car company has found a linear relationship between the amount of money it spends on advertising and the number of cars it sells. Suppose when it spent $50000 on advertising, it sold 500 cars. Moreover, assume for each additional $5000 spent, it will sell 20 more cars. A.) Find the formula for c, the number of cars sold, as a linear notation of the amount spent on advertising, a. Write it using function notation

B.) what is the vertical intercept of the function?