Ya what do u need help with
Hello there!
f(x)=x
f(x) is also known as y
x is 3, which means the x value on the right is 3
Answer: f(3)=3
For this case we must find the unit cost (dollars per pound) of each site and then compare.
We take into account that:
1kg equals 2.205 pounds
So, we have:
Site 1:

Site 2:

So, the unit cost is:

Thus, the best deal is on site 2.
ANswer:
The best deal is on site 2.