SAT Nonlinear functions Practice Question 1 (Easy)

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Math · Advanced MathEasy

The function $f$ is defined by $f(x) = x^2 - 3x + 2$ . What is the value of $f(4)$ ?

$2$

$6$

$10$

$30$

Show answer and explanation

Answer: B

Substitute 4 for $x$ : $f(4) = 4^2 - 3(4) + 2 = 16 - 12 + 2 = 6$ .

Choice D adds $3(4)$ instead of subtracting it.

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