The tiles on the left contain functions written using function notation. match each function with its input.

1. The input is f

2. The input is g

3. The input is h

Step-by-step explanation:

The value inside the bracket of the function is the input given to the function.

1. g(f) = 2f

The input is f

2. h(g) = -4+g

The input is g

3. f(h) = h - 7

The input is h

g(f)=2f⇒  f

h(g)=-4+g ⇒ g

f (h) =h-7 ⇒h

Step-by-step explanation:

Hi, to answer this question we have to understand what is the input of a function.

A function has an input and an output. The input is inside the parentheses, next to the name of the function.

The input is the independent variable.

Now, with this information, we can match each function with its input.

So:

g(f)=2f⇒  f

h(g)=-4+g ⇒ g

f (h) =h-7  ⇒h

Feel free to ask for more if it´s necessary or if you did not understand something

answer are

step-by-step explanation:

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8