Answer: 5 times
Step-by-step explanation:
Given:
The given expression is:

According to Kylie,


To find:
The correct statement for Kylie's explanation.
Solution:
We have,

According to the perfect square trinomial
.


Kylie did not understand that this is a perfect square trinomial, and she did not determine the product correctly.
Therefore, the correct option is C.
Answer:
448 square feet.
Step-by-step explanation:
First off lets calculate the required wallpaper for the two walls which have lengths 15 ft, 15*8*2=240 is the answer as 8 and there are 2 walls so we multiply by 2 then we calculate the other 2 walls with lengths 13 ft, 13*8*2=208 then we finally add them 240+208=448.