Sierra is a college student who plans to spend a summer in Detroit. She has saved $3,500 for her trip and anticipates spending $400 each week on rent, food, and activities. If she models her amount of savings y in dollars, with a representing the number of weeks since the trip started,a) what would the y-intercept represent? How many week since she started the trip.The amount of her account balance at the beginning of her trip.The amount of her account balance at the end of her trip.How many weeks her trip is.The amount of her account balance.How many weeks before she would run out of money.b) what would the x-intercept represent?The amount of her account balance at the end of her trip.The amount of her account balance.How many weeks before she would run out of money.The amount of her account balance at the beginning of her trip.How many week since she started the trip.How many weeks her trip is.