The vertex of this parabola is at (5, -4). which of the following could be its equation?

a. y = 2(x - 5)^2 + 4

b. y = 2(x - 5)^2 - 4

c. y = 2(x + 5)^2 + 4

d. y = 2(x + 5)^2 - 4

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.