Answer:
a)

if x = input
then the function of the input is to "multiply the input by 6"
b)

the function of the input = two multiply by the input minus six
c)

the function of the input = the cube of the input minus five
Explanation:
Given that:
a)

b)

c)

The objective is to state in words the rule defined by each of the functions
We are being given the first question as a sample that:
a)

if x = input
then the function of the input is to "multiply the input by 6"
b)

the function of the input = two multiply by the input minus six
c)

the function of the input = the cube of the input minus five