Answer plz quick and fast what the answer quick

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

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?