Find the vertices and foci of the hyperbola with equation x squared over sixteen minus y squared over forty eight = 1. Vertices: (0, ± 4); Foci: (0, ±8)
Vertices: (0, ± 8); Foci: (0, ± 4)
Vertices: (± 4, 0); Foci: (± 8, 0)
Vertices: (± 8, 0); Foci: (± 4, 0)

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.

Can someone show me step by step how to do this?