Respuesta :
Answer:
x = 1
Step-by-step explanation:
f(x) = 3x + 3
f(x) = 6
=> 3x + 3 = 6
=> 3x = 3
=> x = 1
f(6)=3(6)+3
f(6)=18+3
f(6)=21
you just have to substitute x with 6!:)
f(6)=18+3
f(6)=21
you just have to substitute x with 6!:)
