tolong dijawab kak 1-5 pliis besok dikumpulkan

1. f(x) = x^2 - 2x
    f(-2) = -2^2 - 2(-2)
    f(-2) = 4 + 4 = 8
    
    f(0) = 0^2 - 2 (0)
    f(0) = 0 - 0
    f(0) = 0

    f(2) = 2^2 - 2(2)
    f(2) = 4 - 4
    f(2) = 0

    f(4) = 4^2 - 2(4)
    f(4) = 16 - 8
    f(4) = 8
Range (-8, 0, 0, 8)
2. f(x) = 3x - 1 = 11
    f(x) = 3x = 11 + 1
             3x = 12
               x = 12 : 3
               x = 4
3. f(x) = 2x + 1
    f(1) = 2(1) + 1
    f(1) = 2 + 1
    f(1) = 3

    f(2) = 2(2) + 1
    f(2) = 4 + 1
    f(2) = 5
 
    f(3) = 2 (3) + 1
    f(3) = 6 +1
    f(3) = 7
4. 8 dan 9
5. P = 5      Q = 5
Banyak korespondensi satu2;
5 x 4 x 3 x 2 x 1
= 120

Maaf ya, kalo salah!!!