Question

Can someone please tell me when it is appropriate to use functional notation, such as f(x), and when it is not?

Answer 1

f(x) is just a fancy way of saying y

Answer 2

But how do you write a function of this? 4x^2+100x sq. ft.

Answer 3

I have this question: A gardener has a rose garden that measures 30 feet by 20 feet. He wants
to put a uniform border of pine bark around the outside of the garden. Let x be
the width of the border in feet. Write an equation for the total area, A, of the
border as a function of the width x.

Answer 4

f(x)= 4x^2+100x sq. ft

Answer 5

And I got that as my answer, so would it just be A(x)=4x^2+100x or what?

Answer 6

Oh so the f(x) is all I need?

Answer 7

should be

Answer 8

Okay, thank you! :D

Answer 9

\[A(x)\]is read as;
Area is a function of x