Respuesta :
					                   Attached is my work shown for visual purposes and my explanations. 
I hope this helps! :)
					                
					             I hope this helps! :)
 
													
					                   f(x) = x² - 4
First, substitute the value of x:
f(x) = (-3)² - 4
Then, simplify:
f(x) = 5
					                
					             First, substitute the value of x:
f(x) = (-3)² - 4
Then, simplify:
f(x) = 5
 
					                  