Answer:
![(a)\ h(g) = -4 + g](https://img.qammunity.org/2022/formulas/mathematics/high-school/561yfuwz6yhw6decnzdujq1i508isnemac.png)
g is the input
![(b)\ f(h) =h -7](https://img.qammunity.org/2022/formulas/mathematics/high-school/yrxxs67hmvolz3caa77izxzpp3738p44k6.png)
h is the input
![(c)\ g(f) = 2f](https://img.qammunity.org/2022/formulas/mathematics/high-school/xh5fzyaxc6mqgq0l3hu1dzp0syln4tbfgi.png)
f is the input
Explanation:
Given
See attachment for functions and inputs
Required
Match the function with their inputs
The variables on the left-hand side or the variables inside the function bracket are the inputs of the function. e.g. x is the input of f(x)
Using the above description, we have:
![(a)\ h(g) = -4 + g](https://img.qammunity.org/2022/formulas/mathematics/high-school/561yfuwz6yhw6decnzdujq1i508isnemac.png)
g is the input
![(b)\ f(h) =h -7](https://img.qammunity.org/2022/formulas/mathematics/high-school/yrxxs67hmvolz3caa77izxzpp3738p44k6.png)
h is the input
![(c)\ g(f) = 2f](https://img.qammunity.org/2022/formulas/mathematics/high-school/xh5fzyaxc6mqgq0l3hu1dzp0syln4tbfgi.png)
f is the input