Question on minimum bet blackjack?

So, if a casino has a minimum bet of 10$ on blackjack. Does that mean for every hand you play – the minimum you have to bet is $10? If that’s the case then how would bringing around $100 to the casino last 1 or 2 hours playing blackjack. Wouldn’t you bet $10 every hand, and most likely lose within a couple mins? Sorry, it’s my first time going to a casino

 
 
 
 
 
 

What Freemont Street casino has the lowest minimums on blackjack tables? What is the minimum bet?

I have been to Vegas in the last six months and found a couple $3 tables at the Plaza. Are those still available? Are there other downtown casinos with $3 tables (or cheaper)? Please provide specific information – general information won’t help me. Thanks.