Student a and student b were given the following graph and asked to find the value of f(x) when x = 1. student a gave an answer of 0 while student b gave an answer of −6. who is incorrect?

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.