12*14*3= 504 square feet
504/42= 12
C. 12 rolls
Answer:
32.both of their ideas are correct whether it is to replace x or y first it doesn't matter only one can be replaced to find the value of the other.
33.It doesn't really matter all of them are correct.
For this case we have the following functions:

We must find the following sum of functions:
(f + g) (x)
By definition we have to:

So, we have to:

Answer:
