That interest rate is prohibited by banks in most countries - you would need to go to a payday loan or other type of predator loan scam.  If some agency is offering you this money with such high interest, they view it as higher risk.  If it was guaranteed they would buy bitcoins themselves, right?   I would say unless you have an extra $3k to play with, do not get the loan or you could lose everything you have very quickly.  What are the terms if you are late?

Obviously you do not have the $3k, or you wouldn't be considering this.  So the instant you take out the loan, you owe $600 and if Trump or Elon says something stupid, or if there is a natural disaster that cuts btc mining, you could very well end owing someone more than you can afford to pay back.

DON'T DO IT.