In the number 7,889 which places contain digits where one digit is ten times the value as the other digit

Solution:

Here we are given with the number 7,889.

we have been asked to find which places contain digits where one digit is ten times the value as the other digit.

Here the number 7889 can be re-written as

Here we can say

So number 100th place is ten times the number in the 10th place.

(1,4) is on graph of f(x)

f(1) = 4

so 1/4 f(x)

1/4 f(1)

1/4. ×4

1

so point for function 1/4. f(x) is (1,1)

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3