f (x) = 5x + 25, jika (x|x ∈ bil. prima 17 ≤ x ≤ 31 )

X|X bil prima 17 < x < 31 :
Anggota : {17,19,23,29,31}

F(x) = 5x+25
F(17) = 5(17)+25 = 85+25 = 110
F(19) = 5(19)+25 = 95+25 = 120
F(23) = 5(23)+25 = 115+25 = 140
F(29) = 5(29)+25 = 145+25 = 170
F(31) = 5(31)+25 = 155+25 = 180

Maaf jika ada kesalahan :)

(x|x ∈ bil. prima 17 ≤ x ≤ 31 )
x = {17, 19, 23, 29, 31}

f (17)= 5 (17)+25= 110
f (19)= 5 (19) + 25 = 120
f (23)=5 (23)+25=140
f (29)=5 (29)+25=170
f (31)=5 (31)+25=180