tolong dibantuuuuu matematika no 1 klo bisa semua

No 1
a. f(2) = 3x + 4
= 3(2) + 4
= 6 + 4
= 10
f(4) = 4x + 2/x-2
= 4(4) + 2/4-2
= 18/2
= 9