Question

Solve question 8 on my attachment and show your work to get a medal.

Answer 1

Ok so do you know about composition of functions? And what they are asking when you see:

(g o f)(x)? What that means is we are inputting the f(x) inside the g(x) function. It looks like this - another way to write it:

g(f(x))

Answer 2

So in this case, your (f) function is \[f(x) = \sqrt{x-3}\]

And your (g) function is \[g(x) = x ^{2}+1\]

Right? So what we do is plug in the (f) function in for the x in the (g) function.

That will look like this:

Answer 3

Oh, alright.

Answer 4

Ok, let's walk through this step-by-step ok?

Answer 5

Let me know that you are still there and with me.

Answer 6

Still here. Really need your help.

Answer 7

They also said the area inside is \[5500ft ^{2}\]

So we need to set up 2 equations, one is the perimeter of the 3 sides:
2x + y = 240

The other is for the area, which we know is xy = \[5500ft ^{2}\]