B)A monthly service fee to download e-books is $4.95, plus $3.99 per book downloaded. Write an equation that represents the total cost, c, in a month when b books are downloaded. Explain how your equation represents the problem. C) Based on the situation in b if I had $70 to spend over the next 6 months on e-books. How many books would I be able to purchase? Explain your reasoning and how you got to your answer.