Respuesta :

Step-by-step explanation:

Normally we write equation of functions like this: f(x) = x - 5

When we say f(5) = 7, we are implying that the x is 5.

The equation could look something like this: f(x) = x + 2

In this case, if you put x as 5, you will get 7 or 5 + 2

Means that 5 times of f equals to 7

  • Therefore f(5)-7=0
  • Also f= 1.4