Respuesta :

Answer:

f(3)=-2(3)^2+3-5=16

Step-by-step explanation:

You just plug 3 in for x

Answer:

[tex]f(x) = - 2 {x}^{2} + x - 5 \\ f(3) = - 2 {(3)}^{2} + 3 - 5 \\ f(3) = - 20[/tex]