Given the function f (x) = 9-2x, find x when f (x) = 25

-41

17

-8

x = - 8

Step-by-step explanation:

Set the function f (x) = 9-2x equal to 25, and then solve the resulting equation for x:

9 - 2x = 25.

Isolate the - 2x term by subracting 9 from both sides:

-2x = 16

Finally, solve for x by dividing both sides by - 2:

x = - 16/2, or x = - 8

F (x) = 9-2x move negative two over to f (x) and combine the two so it then becomes 3x then combine 9 and 25 and you get 34 then subtract f (x) to 3x and you get 2x and then divide 34 by 2x and you get 17