tolong di jawab pakai cara terima kasih yang sudah jawab

D = {-3, -2,-1,0,1,2,3,4}
f:x------> x^2 - 1
f(-3) = -3^2 - 1 = 9-1=8                       ^ = pangkat
f(-2) = -2^2 - 1 = 4-1 = 3
f(-1) = -1^2 - 1 = 1-1 = 0
f(0) =  0^2 - 1   = 0-1= -1
f(1) = 1^2 - 1 = 1-1 =0
f(2) = 2^2 - 1 = 4-1=3
f(3) = 3^2 - 1 = 9-1 = 8
f(4) = 4^2 - 1 = 16-1 = 15      

daerah hasil f = {-1, 0, 3, 8, 15}    jawaban : B