Final answer:
To evaluate log4 64, the power to which 4 must be raised to get 64 is 3.
Step-by-step explanation:
To evaluate log4 64, we need to find the power to which 4 must be raised to get 64. In other words, we need to find x in the equation 4x = 64. Since 43 = 64, the value of log4 64 is 3.