The function \(f : F \to R\)
= \(f(x) = \begin{cases} 3x + 2 : x > 4 \\ 3x – 2 : x = 4 \\ 5x – 3 : x < 4 \end{cases}\). Find f(4) – f(-3).
-
28
- 26
- -26
- -28
The correct answer is: A
Explanation
\(f(4) = 3(4) - 2 = 12 - 2 = 10\)
\(f(-3) = 5(-3) - 3 = -15 - 3 = -18\)
\(f(4) - f(-3) = 10 - (-18) = 28\)