Isuck at math and i need this to pass my algebra 2 !

I can help with the last one since i don't know the specifics of the loan thing.  For the last one, though, N is the end amount of bacteria; is the initial amount of bacteria; e is Euler's number, which is a constant; and t is time in hours.  So our equation would look like this: .  First divide both sides by 100 to get .  The only way you can get that k down out of the exponent is to take the natural log of both sides:  .  Of course taking the natural log of the right side undoes the e, and the natural log of 14.32 can be found on your calculator, so we have now 2.6616 = 5k.  Divide both sides by 5 to get that k = .53