Ineed before 6: 30am tomorrow morning i have to show my work and tell if the problem is a function, linear function, or non linear

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.

Arestaurant added a new outdoor section that was 8 feet wide and 6 feet long. what is the area of their new outdoor section

Yvaries directly as x. y =90 when x=6. find y when x=13