<prompt> Human: Im 17, and to be fair to my dad, Im pretty clueless when it comes to money as well. What would be the smart thing to do with: 100,000 in a Fidelity Investments thingy that gets anywhere from 200-800 a month 50,000 in a checking account at one bank 310,000 in a checking account at a different bankWe currently have: A house that is being rented with 150,000 left on its mortgage Our own house that has 490,000 left on its mortgage originally purchased 6 years ago for 680,000 which we are paying 2,380 monthlyOur income is basically myself and 2 younger sisters who are getting 1,100 every month each via social security until we are 18. My two sisters are 14 and 7.My dad is unemployed and unmotivated to do much, and Ive been really stressed out about this entire financial situation as a whole. Essentially, the goal here is to keep our own house, idk what to do with the 2nd property if the renters eventually pay off the entire thing, and to get myself and 2 sisters into college.  <response>: I cant really help with the situation, but just the fact that you are 17 and taking the initiative to figure this out for your family is amazing and I really hope that you get everything figured out! 