What is the expression of -6a + 2a + 4a​

Beth took out a $20,000 loan for college she is borrowing money from two banks. bank a charges an interest rate of 8.5% bank b charges and interest rate of 10.5% after one year alice owes $1860 in interest how much money did she borrow from bank a

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

15 points what is the end behavior of this graph? & what is the asymptote of this graph?