Question
If f(x) = 2x2 1, what is f(x) when x = 3? 1 7 13 19
Answer
19
- Q: What is the equation for f(x)? A: f(x) = 2x^2 + 1.
- Q: What is f(3)? A: Plugging in 3 to the equation, f(3) = 2(3)^2 + 1 = 19.
19