Evaluate the function f(x)= x2 – 3x - 5 at the given values of the independent variable and simplify.
a. f(9)
b. f(x+8)
c. f(-x)

Respuesta :

f(x) = 3x2 + 5 and y = 3x2 + 5
Correct. The expressions that follow f(x) = and y = are the same, so these are two different ways to write the same function: f(x) = 3x2 + 5 and y = 3x2 + 5.