A family needs to build fencing around their rectangular
home and square swimming pool, depicted below.
The total amount of fencing they need can be written as
+10.
Pool (2x) yd
If x = 5;
The family needs
home.
yards of fencing for their
yards of fencing for their
Home
The family needs
pool.
(2 + 5x) yd
(3 + 10x) yd

What situation is an example of an observational study

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

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.