Question

Given f as described below.

f: {whole numbers} → {whole numbers}
Assign each whole number to its largest place value digit.
For example, f(4) = 4, f(14) = 4, and f(194) = 9.
e. Find a value of x that makes the equation f(x) = 7 a true statement.

Answer 1

Answer with Step-by-step explanation:

We are given that a function

`f:W\rightarrow W`

Assign each whole number to its largest place value digit.

`f(4)=4`

`f(14)=4`

`f(194)=9`

We have to find the value of x that makes the equation 7 a true statement.

When f(x)=7

Then, the possible values of x are 7,127,27,257,... .

Because f(7)=7

f(127)=7

f(27)=7

f(257)=7

Therefore, the value of x =7,127,257,27,..