What is the value of 9(4x -4), when x=5

Question

Plz help I can't figure this out

Answer 1

When x=5, the answer can be found by replacing x with 5 as follows:

 

9(4x-4) => 9 (4*5 - 4) => 9 (20 -4) => 9*16 = 144

 

I hope this helps.