Tolong dibantu dengan jawaban yang benar jangan asal plissss thw veat buat jawab paling bagus dan lengkap benar

misalnya :4x - 1 = a4x = a+1x = a+1 / 4soal menjadi
→f(a) = 8(a+1 / 4) + 4f(a) = 2(a+1) + 4f(a) = 2a + 2 + 4f(a) = 2a + 6f(3) = 2(3) + 6f(3) = 6 + 6f(3) = 12
jadi f(3)= 12

17. Fungsi
f(4x-1) = 8x + 4
f(3) = f(4x-1)
3 = 4x-1
4x = 4
x = 1

f(3)= 8(1) + 4
f(3)= 12
...
20
<PQR = 115-65 = 50