Question is unclear to me ,, can you rewrite it in a nicer way so i can answer?
Answer:
x = ln(21)/ ln(4), Decimal Form: 2.19615871
Step-by-step explanation:
This is pretty complex math for middle school with logarithms and what not. Make sure you typed the problem in correctly. If you did, I guess that's your answer.
About 750 different permutations
Answer:

Step-by-step explanation:

The correct answer is actually choice D.