Respuesta :

Let's use the given function:

[tex]f(x)=0.4x^2-36x+1050[/tex]

Evaluate it for x = 25:

[tex]\begin{gathered} f(25)=0.4(25)^2-36(25)+1050 \\ f(25)=250-900+1050 \\ f(25)=400 \end{gathered}[/tex]