Question

Given f as described below.

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,..