Answer:
a decrease by 5/11 I beleive.
5-3=2
50/5x2+5/ 1/5
10x2=20
5/. 1/5= 25
20+25=45
You can make 128 different couches because 16x8=128
For this case we have the following functions:

The first thing we must do for this case is to subtract both functions.
We have then:

Substituting we have:

Rewriting we have:

Evaluating the obtained function for x = 3 we have:

Answer:
The value of the function evaluated at x = 3 is:
