Respuesta :

altavistard

Answer:

f(7) = -5/2

Step-by-step explanation:

Substituting 7 for x in f(x) = 3/x+2 - √x-3, we get:

f(7) = 3/(7+2) - √(7-3)

Note:  the parentheses are required / mandatory

We get   f(7) = 3/9 - 2, or 1/3 - 2, or  f(7) = -5/2