Tolong Donk Aku Kurang Paham Butuh Bgt Pleadee

Tolong donk aku kurang paham butuh bgt pleadee

 

Jawaban:

1. f(x) = 2x - 5

f(2x) = 2.2x - 5 = 4x - 5

Jadi, nilai dari f(2x) = 4x - 5

2. f(x) = -3x + 5

f(x - 1) = -3.(x - 1) + 5 = -3x + 8

Jadi, nilai dari f(x - 1) = -3x + 8

3. f(x) = 4x - 5

f(k) = 19

19 = 4k -5

k = 6

Jadi, nilai k = 6