Question

Find the value of x so that the function has the given value. f(x) = 6x + 9; f(x) = 21

Answer 1

x=2

Explanation:

Answer 2

`x = 2`

Explanation:

We need to find the value of x so that the value of given function becomes 21 .

We have ,

`f(x)=21\\\\ f(x)= 6x + 9`

Now , for finding x ,

`6x +9 = 21 \\\\ 6x = 21 -9 \\\\ 6x = 12 \\\\ x = 2`