The titles on the left contain functions written using function notation. Match each function with its input

g is the input

h is the input

f is the input

Step-by-step 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:

g is the input

h is the input

f is the input

5x+2x=49

7x=49

x=7. 35 apples