Answer:
log_2(100) is about 4 times the value of log_6(20)
Explanation:
Lets find the value of both logs and then compare

To find the value we use change of base formula


Now we find the value of log_6(20)

6.643556 is approximately four times of 1.67195
So log_2(100) is about 4 times the value of log_6(20)