Respuesta :

Answer:

44

Step-by-step explanation:

log₄(x + 20) = 3

4^(log₄(x + 20)) = 4^3

x + 20 = 4³

x = 44

Answer:

x= 44

Step-by-step explanation:

log4(x+20)=3

Raise each side to the base of 4

4^  log4(x+20)= 4^3

x+20 = 64

Subtract 20 from each side

x+20-20 = 64-20

x = 44