Write a expression of divide 10 half and subtract from 50 divided into fifth

The table respent two linear functions the equation respented by the first tables is given

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.

Multiply and simplify 2x^2 y^3 z^2 · 4xy^4 x^2